Adding an example to for some more clarity on what is being asked by MS.
Consider the following restAPI example to Create or Update a database: https://learn.microsoft.com/en-us/rest/api/sql/databases/create-or-update If you look a the top left had corner on this page you can see a drop down list with the following versions:
- 2023-05-01-preview
- 2021-11-01
- 2014-04-01
Selecting each one will give you a modified version of the restAPI command to create or update database
- Selecting "2014-04-01" will give you the below: PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/servers/{serverName}/databases/{databaseName}?api-version=**2014-04-01**
- Selecting "2021-11-01" will give you the below PUT https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/servers/{serverName}/databases/{databaseName}?api-version=**2021-11-01** Note the last part of both PUT statements have different versions. So the Alert from MS is saying that if your app or script developers have used the older (2014) API version, they need to upgrade this to the newer (2021) API version. Hope this adds some more context.