PostgreSQL SQLSTATE 01P01 — deprecated_feature

Official definition

deprecated feature

In plain language

In PostgreSQL SQLSTATE, code 01P01 is deprecated_feature. The official source describes it as “deprecated feature”. Its concrete cause depends on the operation and surrounding message.

Context to inspect

• The surrounding operation, version and subsystem determine the actual cause.
• The same numeric value can mean something different in another namespace.

Safe first checks

1. Confirm which product, protocol or subsystem produced the code.
2. Read the full surrounding error message and inspect relevant logs.
3. Compare the code with the linked authoritative documentation before changing configuration.

Authoritative source

PostgreSQL Documentation — Error Codes

Related codes