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23503
Easy Fix
PostgreSQL · Database Server
PostgreSQL SQLSTATE 23503 (foreign_key_violation) indicates foreign key violation during constraint and relational integrity checks.
Quick Answer
Error code 23503 on your PostgreSQL Database Server means: PostgreSQL SQLSTATE 23503 (foreign_key_violation) indicates foreign key violation during constraint and relational integrity checks.. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
RDS-POSTGRESAZURE-PG-FLEXCLOUDSQL-PG1112131415161718
Likely Causes
  1. The current statement triggered foreign_key_violation, which PostgreSQL classifies as SQLSTATE 23503.
  2. Application SQL, parameter values, or transaction state are incompatible with PostgreSQL rules for foreign key violation.
  3. Environment differences (schema, permissions, or runtime settings) exposed this 23503 condition in production flow.
How to Fix It
1
Capture full query text, bind values, and transaction context for SQLSTATE 23503.
2
Reproduce foreign_key_violation in staging with the same schema version and connection settings.
3
Inspect pg logs and execution plan details to isolate the exact failing clause or object.
4
Apply a targeted fix (query rewrite, schema migration, or transaction-order change) for foreign key violation.
5
Deploy and verify SQLSTATE 23503 no longer appears in error telemetry.
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Related Error Codes
0800008003080060800108004
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