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P2003
Prisma ORM Error P2003: Foreign key constraint failed
Error✕ Not retryable · fix the payloadHTTP 409 ConflictDatabase
TL;DR · 10-second read
The referenced parent row does not exist, or a delete would orphan children. Create the parent first or set onDelete: Cascade on the relation.
Identify: does your log match?
What you see · exact log / response
PrismaClientKnownRequestError:
Invalid `prisma.post.create()` invocation:
Foreign key constraint violated on the constraint: `Post_authorId_fkey`
code: 'P2003',
meta: { modelName: 'Post', constraint: 'Post_authorId_fkey' }Fix
Being written
Copy-paste fixes for P2003 are in the enrichment queue
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Last verified 2026-10-13 · Source: Prisma error reference P1000–P6010 · Official docs ↗ · ~4,400 searches/mo