820_03 payments sent to the CR in a MOU/EC service territory are not invoice specific, therefore penalty charges incurred cannot be tied back to an original invoice, however the 810_03 TX SET guide requires the Invoice Number (REF~IK segment) when using the Late Payment Charge code (LPC001).
Reason:
Operational/System Impact: Because the Invoice Number (REF~IK segment) is required when using the Late Payment Charge code, we are forced to use a generic code in the 810_03 SAC04 data element with additional description in the 810_03 SAC15 data element.
Market Impact: With the use of a generic code the TDSP is required to code logic that will read the additional text in the SAC15 data element, adding additional cost to look for this particular generic code in each of the 810_03 received.
