Step 1: Delete payment card fields

Remove fields that are not needed by the example output. This mapping keeps the payment type and last four digits from the synthetic fixture.

Payment-field mapping
- mapping: |
    root = this
    root.payment_method = this.payment_method.without(
      "full_number",
      "expiry"
    )

Check the adapted input schema for alternate or nested card fields. Deleting these two keys does not inspect the rest of a record.