Error code
SQL Server 515
SQL SERVER515
Database Error Code· An error code returned by a database server such as PostgreSQL or MySQL.
What it means
cannot insert the value NULL into column — NOT NULL constraint violated.
How to fix it
- Provide an explicit non-NULL value for the column in the statement.
- Add a DEFAULT constraint to the column so missing values are filled automatically.
- Audit application code to ensure all required fields are populated before the write.
Not affiliated with SQL Server. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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