Child records loaded before parent records in a multi-table ETL pipeline. Parent record was deleted but orphaned child records remain. Lookup table was not populated or was truncated before loading dependent data. ID mismatch between source and destination systems during migration

Step 1: Identify the constraint from the error: `DETAIL: Key (parent_id)=(123) is not present in table 'parent'`.. Step 2: Reorder the pipeline to load parent tables before child tables.. Step 3: Use `ON CONFLICT DO NOTHING` or filter out orphan records before insert.. Step 4: Add a referential integrity check in the dbt test layer or pre-load validation.

High severitydata format

Power BI Refresh Error:
23503

What does this error mean?

An INSERT or UPDATE references a value in a foreign key column that does not exist in the referenced parent table.

Common causes

1Child records loaded before parent records in a multi-table ETL pipeline
2Parent record was deleted but orphaned child records remain
3Lookup table was not populated or was truncated before loading dependent data
4ID mismatch between source and destination systems during migration

How to fix it

1Step 1: Identify the constraint from the error: `DETAIL: Key (parent_id)=(123) is not present in table 'parent'`.
2Step 2: Reorder the pipeline to load parent tables before child tables.
3Step 3: Use `ON CONFLICT DO NOTHING` or filter out orphan records before insert.
4Step 4: Add a referential integrity check in the dbt test layer or pre-load validation.

Frequently asked questions

How do I prevent 23503 errors in automated pipelines?

Add retry logic with exponential backoff, validate data quality before loading, and monitor pipeline failures in MetricSign to catch this error early.

Official documentation: https://www.postgresql.org/docs/current/errcodes-appendix.html