The API operation 'PostItem' requires the property 'item/Assignee' to be a string of maximum length '255' but is of length '460'.

Question

When I am trying to enter the data in the Sharepoint I am getting this error "The 'inputs.parameters' of workflow operation 'Create_item' of type 'OpenApiConnection' is not valid. Error details: The API operation 'PostItem' requires the property 'item/Assignee' to be a string of maximum length '255' but is of length '462'"

I have updated my sharepoint column to multiple line text however I am still getting the above error, however I am not getting this error when i am trying to add the same data manually in the column of the sharepoint

[https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2F******************%2Fissues%2F%3Fjql%3Dlabels%2B%253D%2BTEQ-ONG&data=05%7C01%7C%7C618e16234e074aa0771208daa183e748%7Cc8eca3ca127646d59d9da0f2a028920f%7C0%7C0%7C637999885145956734%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=tonEm2PjAIAlvmrZXEANM8ITBeOf0S%2F6Jaz3zPMepFk%3D&reserved=0] * TEQ-WE100122

Answer 1

Hi @Ahmed Haqqani
I will recommend you to use following rest api to create list item

url: "https://xxx.sharepoint.com/sites/xiexin/_api/web/lists/getByTitle('TestList99')/items",
type: "POST",
headers:
{
// Accept header: Specifies the format for response data from the server.
"Accept": "application/json;odata=verbose",
//Content-Type header: Specifies the format of the data that the client is sending to the server
"Content-Type": "application/json;odata=verbose",
// X-RequestDigest header: When you send a POST request, it must include the form digest value in X-RequestDigest header
"X-RequestDigest": $("#__REQUESTDIGEST").val()
}
body:
{ "__metadata": {"type": "SP.Data.TestList99ListItem"},
"Title": "New Title 2",
"multicolumn": "text"
}

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Answer 2

Thanks a lot for your response, I was able to fix the data in the source itself by removing the unwated hyperlink as a power automate.
Thanks for the advice.

Answer 3

Hi @Ahmed Haqqani
I'm glad to hear you solve the problem ,if you have any issue about SharePoint, you are welcome to raise a ticket in this forum.

By the way, since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others." and according to the scenario introduced here: Answering your own questions on Microsoft Q&A, I would make a brief summary of this thread:

Issue Symptom:
The API operation 'PostItem' requires the property 'item/Assignee' to be a string of maximum length '255' but is of length '460'

Current status:
Fix the data in the source itself by removing the unwated hyperlink as a power automate.

You could click the "Accept Answer" button for this summary to close this thread, and this can make it easier for other community member's to see the useful information when reading this thread. Thanks for your understanding!