Create and Manage Campaign Groups

Warning

Deprecation Notice
The Marketing Version 202310 (Marketing October 2023) and earlier versions (excluding 202306 and 202307) have been sunset. Additionally, the unversioned APIs will be sunset soon. We recommend that you migrate to the versioned APIs as well as migrate to the new Content and Community Management APIs to avoid disruptions. See the Migration page for more details. If you haven’t yet migrated and have questions, submit a request on the LinkedIn Developer Support Portal.

Campaign groups provide advertisers a way to manage status, budget, and performance across multiple related campaigns.

Whenever an Ad Account is created, a new campaign group is automatically created for it.

A campaign group can contain a variety of campaign types. There is no limit to the number of campaign groups per advertiser account. Note that LinkedIn imposes a limit of 5,000 campaigns per advertiser account and 2,000 campaigns per non-default campaign group.

Permissions

There are two conditions for successful Ad Account Users API calls:

• Scope permission accessibility for:

  • rw_ads (read/write)
  • r_ads (read-only)

• The Ad Account user assigning permission holding one of the following Ad Account roles:

  • ACCOUNT_BILLING_ADMIN
  • ACCOUNT_MANAGER
  • CAMPAIGN_MANAGER
  • CREATIVE_MANAGER
  • VIEWER (read-only, even with rw_ads scope)

For more information on Ad Account roles and permissions, refer to the following:

• Ad Account User Role Definitions
• Create and Manage Ad Account Users

Pagination for non-search APIs

The adCampaignGroups API implements pagination using the start and count parameters for several methods. The max count value is 1000. A 400 Bad Request response with the message, "Specified count is larger than 1000" is returned if:

• The count is greater than 1000
• The number of elements in the response is greater than 100, and the API request does not contain pagination request parameters

For more information, see Pagination.

Schema

Note

Starting 202211, response decoration is no longer supported and has been replaced by Additional Info Fields. These new field(s) provide additional information for a field that is present in a schema. Learn more about the Additional Info Fields here.

Field Name	Type	Description	Additional Info Field
account	SponsoredAccountUrn	URN identifying the advertising account associated with the campaign. This value is immutable once set. For example, urn:li:SponsoredAccount:{id}.	False
accountInfo	Account	Information about the advertising account associated with the campaign. This is a read only field. Please refer to Additional Info Fields to learn how to access this field.	True
backfilled	boolean, default="false"	Flag that denotes whether the campaign group was created organically or to backfill existing campaigns. This is a read-only field set by the system.	False
id	long	Numerical identifier for the campaign group. This is a read-only field set by the system.	False
name	string	The name of the campaign group used to make it easier to reference a campaign group and recall its purpose. The value of this field cannot exceed 100 characters.	False
runSchedule.start	long	Represents the inclusive (greater than or equal to) date when to start running the associated campaigns under this campaign group. This field is required.	False
runSchedule.end	optional long	Represents the exclusive (strictly less than) date when to stop running the associated campaigns under this campaign group. If this field is unset, it indicates an open range with no end date. This field is required if totalBudget is set.	False
servingStatuses	string[]	Array of enums that determine whether or not campaigns within the campaign group may be served. Unlike status, which is user-managed, the values are controlled by the service. This is a read-only field. Possible values are: RUNNABLE Campaign group is currently active; billing information, budgetary constraints, or start and end dates are valid. STOPPED Campaign group is currently not eligible for serving for reasons other than billing information, budgetary constraints, or termination dates. For instance, a campaign group will be STOPPED if it has been canceled by the user, or it is marked as spam. BILLING_HOLD Parent account is on billing hold. ACCOUNT_TOTAL_BUDGET_HOLD Parent account total budget has been reached. ACCOUNT_END_DATE_HOLD Parent account end date has been reached. CAMPAIGN_GROUP_TOTAL_BUDGET_HOLD Campaign group total budget has been reached. CAMPAIGN_GROUP_START_DATE_HOLD Campaign group start date is in the future. CAMPAIGN_GROUP_END_DATE_HOLD Campaign group end date has been reached.	False
status	string	Status of campaign group. Possible values are: ACTIVE - Denotes that the campaign group is capable of serving ads, subject to run date and budget limitations (as well as any other limitations at the account or campaign level). ARCHIVED - Denotes that the campaign group is presently inactive, and should mostly be hidden in the UI until un-archived. CANCELLED - Denotes that the campaign group has been permanently canceled and cannot be reactivated. Not a settable status. DRAFT - Denotes that the campaign group is in a preliminary state and should temporarily not be served. PAUSED - Denotes that the campaign group meets all requirements to be served, but temporarily should not be. PENDING_DELETION - Denotes that the campaign group has been requested to be deleted that is currently pending. REMOVED - Denoted that the campaign group was deleted, but must remain fetchable due to the existence of performance data.	False
totalBudget.amount	BigDecimal	Maximum amount to spend across all associated campaigns and creatives for duration of the campaign group.	False
totalBudget.currencyCode	Currency	Maximum amount to spend over the life of the campaign. The currency must match the ISO currency code of the account.	False
test	boolean, default="false"	Flag showing whether this campaign group is a test campaign group, i.e., belongs to a test account. This is a read-only and immutable field that is set implicitly during creation based on whether the account is a Test Account or not.	False
allowedCampaignTypes	string[]	Array of enums that indicates allowed campaign types within the specific campaign group. Possible values are: TEXT_AD - Text-based ads that show up in the right column or top of the page on LinkedIn. SPONSORED_UPDATES - Native ads that promote a company's content updates in the LinkedIn feed. SPONSORED_INMAILS - Personalized messages with a call-to-action button delivered to a LinkedIn's member inbox. DYNAMIC - Ads that are dynamically personalized. This is a read-only field.	False
objectiveType	string	Campaign Group Objective type values. This field is optional and immutable. Campaigns in this group will automatically have the same objective type. Click here for Objective descriptions BRAND_AWARENESS ENGAGEMENT JOB_APPLICANTS LEAD_GENERATION WEBSITE_CONVERSIONS WEBSITE_VISITS VIDEO_VIEWS

Note

allowedCampaignTypes is in the response only when the account type is ENTERPRISE and is not in the response when account type is BUSINESS (as all campaign types can be created within Business accounts.)

Before creating new campaigns in Enterprise accounts, it is recommended to check allowedCampaignTypes first.

Create a Campaign Group

Campaign groups can be created in ACTIVE or DRAFT state. You can change ACTIVE to ARCHIVED or PAUSED.

http

POST https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups

{
    "account": "urn:li:sponsoredAccount:512352200",
    "name": "CampaignGroup1",
    "runSchedule": {
        "end": 9876543210123,
        "start": 1234567890987
    },
    "status": "ACTIVE",
    "totalBudget": {
        "amount": "60000.00",
        "currencyCode": "USD"
    }
}

curl

curl -X POST 'https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Authorization: Bearer {INSERT_TOKEN}' \
-H 'Content-Type: application/json' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
--data '{
    "account": "urn:li:sponsoredAccount:512352200",
    "name": "CampaignGroup1",
    "runSchedule": {
        "end": 9876543210123,
        "start": 1234567890987
    },
    "status": "ACTIVE",
    "totalBudget": {
        "amount": "60000.00",
        "currencyCode": "USD"
    }
}'

Budgeting and Run Schedule

Budgets and start/end dates can exist at the advertiser account, campaign group, or campaign levels. If there's a conflict between levels, the more restrictive values are used for serving.

Get a Campaign Group

http

GET https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupsId}

curl

curl -X GET 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupsId}' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Authorization: Bearer {INSERT_TOKEN}'

Sample Response

{
    "account": "urn:li:sponsoredAccount:512358882",
    "backfilled": false,
    "changeAuditStamps": {
        "created": {
            "actor": "urn:li:person:324_kGGaLE",
            "time": 1490074934000
        },
        "lastModified": {
            "actor": "urn:li:unknown:0",
            "time": 1490074934000
        }
    },
    "id": 512358882,
    "name": "New Campaign Group",
    "runSchedule": {
        "end": 9876543210123,
        "start": 1234567890987
    },
    "test": false,
    "servingStatuses": [
        "BILLING_HOLD"
    ],
    "allowedCampaignTypes": [
        "SPONSORED_UPDATES",
        "TEXT_AD"
    ],
    "status": "ACTIVE"
}

Search for Campaign Groups

Note

From 202401 version and above, we have moved from index based pagination to cursor based pagination for our search APIs.

Cursor based Pagination for search APIs

The adCampaignGroups API implements cursor based pagination using the pageSize and pageToken parameters for search method. The max allowed pageSize is 1000.

• pageSize governs the number of requested entities.
• pageToken is used to get the next set of results.
  • nextPageToken is returned in metadata field of the search response.
  • This should be passed in pageToken query parameter in the request to get the next page of results.

Use the q=search parameter with to search for campaign groups by ID, name, and status fields. Search criteria is mandatory and can be chained together for increased granularity.

http

GET https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups?q=search&search=(searchCriteria:(values:List(searchValue)))

curl

curl --location --request GET 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups?q=search&search=(status:(values:List(ACTIVE)))' \
--header 'Authorization: Bearer {INSERT_TOKEN}' \
--header 'Linkedin-Version: {version number in the format YYYYMM}' \
--header 'X-Restli-Protocol-Version: 2.0.0'

Parameters

Field Name	Required	Description
search.id.values	no	Searches for campaign groups by ID. For example, urn:li:sponsoredCampaignGroup:{campaignGroupId}
search.status.values	no	Searches for campaign groups with the provided status. The possible values are: ACTIVE ARCHIVED CANCELED DRAFT PAUSED PENDING_DELETION REMOVED
search.name.values	no	Searches for campaign groups by name.
search.test	no	Searches for campaign groups based on test or non-test. true: for test campaign groups false: for non-test campaign groupsIf not specified, searches for both test and non-test campaign groups.
sortOrder	no	Specifies the sort order of the results. Results will be sorted by campaign group id. Supported values include: ASCENDING DESCENDING The default is "ASCENDING".
pageSize	no	Specifies the number of entities to be returned. The default is 100. Max is 1000.
pageToken	no	Unique key representing the last entity of the response. This is to be used to fetch the next set of entities. If less than pageSize entities are returned in the current response, pageToken will be null

Sample Request

The following example searches for all campaign groups in ACTIVE and DRAFT status. The results are ordered by id in descending order.

http

GET https://api.linkedin.com/rest/adAccounts/506223315/adCampaignGroups?q=search&search=(status:(values:List(ACTIVE,DRAFT)))&sortOrder=DESCENDING

curl

curl --location --request GET 'https://api.linkedin.com/rest/adAccounts/506223315/adCampaignGroups?q=search&search=(status:(values:List(ACTIVE,DRAFT)))&sortOrder=DESCENDING' \
--header 'Authorization: Bearer {INSERT_TOKEN}' \
--header 'Linkedin-Version: {version number in the format YYYYMM}' \
--header 'X-Restli-Protocol-Version: 2.0.0'

Sample Response

{
    "elements": [
        {
            "runSchedule": {
                "end": 9876543210123,
                "start": 1234567890987
            },
            "changeAuditStamps": {
                "created": {
                    "time": 1542042798000
                },
                "lastModified": {
                    "time": 1542129293297
                }
            },
            "name": "Refresh group",
            "test": false,
            "servingStatuses": [
                "CAMPAIGN_GROUP_END_DATE_HOLD",
                "BILLING_HOLD"
            ],
            "allowedCampaignTypes": [
                "SPONSORED_UPDATES",
                "TEXT_AD"
            ],
            "backfilled": false,
            "id": 603407684,
            "account": "urn:li:sponsoredAccount:506223315",
            "status": "ACTIVE"
        },
        {
            "runSchedule": {
                "start": 1493228897000
            },
            "changeAuditStamps": {
                "created": {
                    "time": 1493228897000
                },
                "lastModified": {
                    "time": 1493228897000
                }
            },
            "name": "New Campaign Group",
            "test": false,
            "servingStatuses": [
                "BILLING_HOLD"
            ],
            "allowedCampaignTypes": [
                "SPONSORED_UPDATES",
                "TEXT_AD"
            ],
            "backfilled": false,
            "id": 504293601,
            "account": "urn:li:sponsoredAccount:506223315",
            "status": "ACTIVE"
        }
    ],
    "metadata": {
        "nextPageToken": "DgGerr1iVQreCJVjDOW_rcp63nueBDipsS4DJpvJo"
    }
}

Note

The above call may return both test and non-test campaign groups. If you would like to search only non-test campaign groups, you can filter out the test campaign groups by specifying search.test=false.
If you would like to search only test campaign groups, specify search.test=true.

API Call to get the next set of results would use the nextPageToken passed in the response above.

http

GET https://api.linkedin.com/rest/adAccounts/506223315/adCampaignGroups?q=search&search=(status:(values:List(ACTIVE,DRAFT)))&sortOrder=DESCENDING&pageToken=DgGerr1iVQreCJVjDOW_rcp63nueBDipsS4DJpvJo

curl

curl --location --request GET 'https://api.linkedin.com/rest/adAccounts/506223315/adCampaignGroups?q=search&search=(status:(values:List(ACTIVE,DRAFT)))&sortOrder=DESCENDING&pageToken=DgGerr1iVQreCJVjDOW_rcp63nueBDipsS4DJpvJo' \
--header 'Authorization: Bearer {INSERT_TOKEN}' \
--header 'Linkedin-Version: {version number in the format YYYYMM}' \
--header 'X-Restli-Protocol-Version: 2.0.0'

Update a Campaign Group

Campaign groups can be updated with a partial update.

Note

If the account type is ENTERPRISE, you cannot update the default campaign group's fields through the API. To identify default campaign groups, check if backfilled is set to true. For non-default campaign groups, only name and status are mutable.

Sample Request

To update the budget:

http

POST https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupId}

{
    "patch": {
        "$set": {
            "totalBudget": {
                "amount": "3000",
                "currencyCode": "USD"
            }
        }
    }
}

curl

curl -X POST 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupId}' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Authorization: Bearer {INSERT_TOKEN}' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Content-Type: application/json' \
--data '{
    "patch": {
        "$set": {
            "totalBudget": {
                "amount": "3000",
                "currencyCode": "USD"
            }
        }
    }
}'

To update the status:

http

POST https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupId}

{
    "patch": {
        "$set": {
            "status": "DRAFT"
        }
    }
}

curl

curl -X POST 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupId}' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Authorization: Bearer {INSERT_TOKEN}' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Content-Type: application/json' \
--data '{
    "patch": {
        "$set": {
            "status": "DRAFT"
        }
    }
}'

Delete a Campaign Group

A Campaign Group can be deleted. Use DELETE method to delete a DRAFT campaign group. To start the process of deleting non DRAFT campaign group, update the status to PENDING_DELETION.

Sample Request

http

To delete DRAFT campaign group:

DELETE https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupId}

To delete non DRAFT campaign group:

POST https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupId}
{
    "patch": {
        "$set": {
            "status": "PENDING_DELETION"
        }
    }
}

curl

To delete DRAFT campaign group:
curl -X DELETE 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupId}' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Authorization: Bearer {INSERT_TOKEN}'

To delete non DRAFT campaign group:
curl -X POST 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups/{adCampaignGroupId}' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Authorization: Bearer {INSERT_TOKEN}' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Content-Type: application/json' \
--data '{
    "patch": {
        "$set": {
            "status": "PENDING_DELETION"
        }
    }
}'

A successful response returns a 204 code.

Batch Operations

• Batch Create Campaign Groups
• Batch Get Campaign Groups
• Batch Partial Update Campaign Groups
• Batch Delete Campaign Groups

Batch operations may only be performed on entities that belong to the same Ad Account.

Batch Create Campaign Groups

When you perform a batch create, the header X-RestLi-Method must be included in the request and set to BATCH_CREATE.

Note

This API is currently not supported for ENTERPRISE accounts.

Sample Request

http

POST https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups

{
    "elements": [
        {
            "account": "urn:li:sponsoredAccount:512352200",
            "name": "CampaignGroup2",
            "runSchedule": {
                "end": 9876543210123,
                "start": 1234567890987
            },
            "status": "ACTIVE",
            "totalBudget": {
                "amount": "60000.00",
                "currencyCode": "USD"
            }
        },
        {
            "account": "urn:li:sponsoredAccount:512352200",
            "name": "CampaignGroup3",
            "runSchedule": {
                "end": 9876543210123,
                "start": 1234567890987
            },
            "status": "ACTIVE",
            "totalBudget": {
                "amount": "30000.00",
                "currencyCode": "USD"
            }
        }
    ]
}

curl

curl -X POST 'https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Authorization: Bearer {INSERT_TOKEN}' \
-H 'X-RestLi-Method: BATCH_CREATE' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Content-Type: application/json' \
--data '{
    "elements": [
        {
            "account": "urn:li:sponsoredAccount:512352200",
            "name": "CampaignGroup2",
            "runSchedule": {
                "end": 9876543210123,
                "start": 1234567890987
            },
            "status": "ACTIVE",
            "totalBudget": {
                "amount": "60000.00",
                "currencyCode": "USD"
            }
        },
        {
            "account": "urn:li:sponsoredAccount:512352200",
            "name": "CampaignGroup3",
            "runSchedule": {
                "end": 9876543210123,
                "start": 1234567890987
            },
            "status": "ACTIVE",
            "totalBudget": {
                "amount": "30000.00",
                "currencyCode": "USD"
            }
        }
    ]
}'

Batch Get Campaign Groups

Multiple campaign groups can be requested in a single call by chaining together ids parameters that each have a corresponding campaign group ID.

http

GET https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups?ids=List(campaignGroupId1,campaignGroupId2)

curl

curl -X GET 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups?ids=List(campaignGroupId1,campaignGroupId2)' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Authorization: Bearer {INSERT_TOKEN}'

Sample Request

http

GET https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups?ids=List(604716224,604716214)

curl

curl -X GET 'https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups?ids=List(604716224,604716214)' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Authorization: Bearer {INSERT_TOKEN}'

Sample Response

{
    "errors": {},
    "results": {
        "604716214": {
            "account": "urn:li:sponsoredAccount:512352200",
            "backfilled": false,
            "changeAuditStamps": {
                "created": {
                    "actor": "urn:li:person:324_kGGaLE",
                    "time": 1494970241000
                },
                "lastModified": {
                    "actor": "urn:li:unknown:0",
                    "time": 1494970241000
                }
            },
            "id": 604716214,
            "name": "CampaignGroup2",
            "runSchedule": {
                "end": 9876543210123,
                "start": 1234567890987
            },
            "test": false,
            "servingStatuses": [
                "BILLING_HOLD"
            ],
            "allowedCampaignTypes": [
                "SPONSORED_UPDATES",
                "TEXT_AD"
            ],
            "status": "ACTIVE",
            "totalBudget": {
                "amount": "60000",
                "currencyCode": "USD"
            }
        },
        "604716224": {
            "account": "urn:li:sponsoredAccount:512352200",
            "backfilled": false,
            "changeAuditStamps": {
                "created": {
                    "actor": "urn:li:person:324_kGGaLE",
                    "time": 1494970241000
                },
                "lastModified": {
                    "actor": "urn:li:unknown:0",
                    "time": 1494970241000
                }
            },
            "id": 604716224,
            "name": "CampaignGroup3",
            "test": false,
            "runSchedule": {
                "end": 9876543210123,
                "start": 1234567890987
            },
            "servingStatuses": [
                "BILLING_HOLD"
            ],
            "allowedCampaignTypes": [
                "SPONSORED_UPDATES",
                "TEXT_AD"
            ],
            "status": "ACTIVE",
            "totalBudget": {
                "amount": "30000",
                "currencyCode": "USD"
            }
        }
    },
    "statuses": {}
}

Batch Update Campaign Groups

Multiple campaign groups can be updated in a single call. Similar to a Batch GET, this can be done by chaining together ids parameters that each have a corresponding campaign group ID.

When you perform a batch update, the header X-RestLi-Method must be included in the request and set to BATCH_PARTIAL_UPDATE.

Note

If the account type is ENTERPRISE, you cannot update the default campaign group's fields through the API. To identify default campaign groups, check if backfilled is set to true. For non-default campaign groups, only name and status are mutable.

Sample Request

http

POST https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups?ids=List(604716224,604716214)

{
    "entities": {
        "604716214": {
            "patch": {
                "$set": {
                    "totalBudget": {
                        "amount": "3000",
                        "currencyCode": "USD"
                    }
                }
            }
        },
        "604716224": {
            "patch": {
                "$set": {
                    "status": "ACTIVE"
                }
            }
        }
    }
}

curl

curl -X POST 'https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups?ids=List(604716224,604716214)' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Authorization: Bearer {INSERT_TOKEN}' \
-H 'X-RestLi-Method: BATCH_PARTIAL_UPDATE' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Content-Type: application/json' \
--data '{
    "entities": {
        "604716214": {
            "patch": {
                "$set": {
                    "totalBudget": {
                        "amount": "3000",
                        "currencyCode": "USD"
                    }
                }
            }
        },
        "604716224": {
            "patch": {
                "$set": {
                    "status": "ACTIVE"
                }
            }
        }
    }
}'

Batch Delete Campaign Groups

Multiple campaign groups can be deleted. Use DELETE method to delete DRAFT campaign groups. To start the process of deleting non DRAFT campaign groups, update the status to PENDING_DELETION.

Sample Request

http

To delete DRAFT campaign groups:

DELETE https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups?ids=List(CAMPAIGN_GROUP_ID1, CAMPAIGN_GROUP_ID2)

To delete non DRAFT campaign groups:

POST https://api.linkedin.com/rest/adAccounts/512352200/adCampaignGroups?ids=List(604716224,604716214)
{
    "entities": {
        "604716214": {
            "patch": {
                "$set": {
                    "status": "PENDING_DELETION"
                }
            }
        },
        "604716224": {
            "patch": {
                "$set": {
                    "status": "PENDING_DELETION"
                }
            }
        }
    }
}

curl

To delete DRAFT campaign groups:
curl -X DELETE 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups?ids=List(CAMPAIGN_GROUP_ID1, CAMPAIGN_GROUP_ID2)' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Authorization: Bearer {INSERT_TOKEN}'

To delete non DRAFT campaign groups:
curl -X POST 'https://api.linkedin.com/rest/adAccounts/{adAccountId}/adCampaignGroups?ids=List(CAMPAIGN_GROUP_ID1, CAMPAIGN_GROUP_ID2)' \
-H 'X-Restli-Protocol-Version: 2.0.0' \
-H 'Authorization: Bearer {INSERT_TOKEN}' \
-H 'X-RestLi-Method: BATCH_PARTIAL_UPDATE' \
-H 'Linkedin-Version: {version number in the format YYYYMM}' \
-H 'Content-Type: application/json' \
--data '{
    "entities": {
        "CAMPAIGN_GROUP_ID1": {
            "patch": {
                "$set": {
                    "status": "PENDING_DELETION"
                }
            }
        },
        "CAMPAIGN_GROUP_ID2": {
            "patch": {
                "$set": {
                    "status": "PENDING_DELETION"
                }
            }
        }
    }
}'

A successful response returns a 204 code.