Just upgraded from 2021.1 to 2021.3 and i noticed in the upgrade log, the there is a index key to long for SQL Server. Output is directly visible in the logs. Might be worth fixing to avoid future issues.
Executing .NET Database Server script 'Script0297CreateBlobTable'
Warning! The maximum key length for a clustered index is 900 bytes. The index 'IX_Blob_BlobId' has maximum length of 1040 bytes. For some combination of large values, the insert/update operation will fail.