Error Codes
03/16/2026
Known Issues List 3.12.2026
Error Codes
07/31/2025
Mail Quality Data through IV-MTR Error Codes

The attached is a listing of error codes. It identifies which codes are currently available in MQD-IV provisioning and also whether the error codes are also available in the drills from the Mailer Scorecard.

Error Codes
06/26/2019
Mail.XML Validations R49
Error Codes
06/26/2019
Mail.dat Validations R49
Error Codes
10/10/2018
Mail.XML Validations R48

Validations for mail.XML pertaining to R48 of PostalOne!.