The following error messages can be generated by get_users_m.
1004: authentication error
Associated Inputs: auth_key, client_id, client_no
1012: invalid input format
Associated Inputs: client_receipt_id
Additional Comments: This value must be unique for a client and must be alphanumeric. A previously used client_receipt_id can be reused if all those previous calls have failed (with an error_code other than 0/OK), if the client parameter NEVER_ALLOW_USED_RECEIPT_ID = FALSE.
Alternate Message Output
1012: email is invalid 1012: include_archived_user is invalid 1012: status is invalid