How to diagnose and fix the 40002 transaction_integrity_constraint_violation error code in Postgres.
The 40002 error code in PostgreSQL stands for transaction_integrity_constraint_violation. This error occurs when a transaction violates a database constraint, such as a foreign key constraint, a unique constraint, or a check constraint, during its execution. This violation can happen due to an insert, update, or delete operation that conflicts with the rules defined by the …