3774974 - Negative APERAK (Z29) due to not permitted value Z75 in MSCONS 13025 blocking complete message

An internal negative APERAK is received for MSCONS 13025 with error code Z29.

Error message example:
"nicht erlaubter Wert Z75" (value not allowed Z75)

The error occurs on segment:
STS (C556/9013)

As a result:
- The entire MSCONS message is rejected
- Valid data within the message is not sent to market partners
- Outbound communication is blocked

Typical APERAK extract:
ERC+Z29'
FTX+ABO+++nicht erlaubter Wert Z75 ...

MSCONS, APERAK, Z29, Z75, nicht erlaubter Wert, STS C556 9013, MSCONS 13025, Aggregated MSCONS, 4P0 condition, MAKO, IS-U-LIB-DE-MDU, Utilities Germany, negative APERAK, market communication, , KBA , IS-U-MD-MCM , Measurement Concept Management , Problem