SR005

Severity: error

Summary: schema has more than one primary key field

What this means

Two or more fields in the schema declare primary: true. Shaperail supports exactly one primary key per resource. Composite primary keys are not supported.

Example that triggers this

resource: users
version: 1
schema:
  id:  { type: uuid, primary: true, generated: true }
  alt: { type: uuid, primary: true, generated: true }

How to fix it

Remove primary: true from all fields except one. Keep it only on the canonical id field.