Sandbox Testing
You can pre-determine a Form 1099’s filing status by passing a test value in the formFields.accountNumber
request attribute.
Other ways to receive a filing rejection
Form 1099s will also be placed in a REJECTED
status automatically if either the Payee or Payer have an associated MISMATCH
Tin Verification.
To mimic this behavior in sandbox, simply pass in a test tin value that corresponds to a MISMATCH
when creating a Form 1099.