Push payroll deduction changes for employee garnishments (child support, tax levies) through the ADP Workforce Now Payroll Data Input API

Steps

1. Authenticate to the ADP API using OAuth2 client_credentials with mutual TLS as required by ADP (see ADP mTLS auth documentation)
2. Identify the open Pay Data batch for the current payroll cycle for the target company using the payroll cycle endpoints
3. Construct a batch payload including the worker's aoid (ADP's worker identifier), the deduction code for the garnishment type (e.g., child support or tax levy), and the deduction amount
4. Submit the pay data batch via POST to the Payroll Data Input API endpoint; a batch call can include multiple workers in a single request
5. Confirm the batch was accepted by checking the response status and any returned batch ID
6. Retain the garnishment order reference number in the batch metadata for audit and remittance reconciliation