https://userapps.support.sap.com/sap/support/knowledge/en/3745176
3745176 - E03 UTILMD to TSO: Missing SEQ+Z98 (SG8) Causes Negative APERAK ERC+Z29 | SAP Knowledge...
Outgoing E03 UTILMD messages 55670, 55674, and 55613 are missing the mandatory SEQ+Z98 segment. Numerous negative APERAK responses are returned by the...
https://userapps.support.sap.com/sap/support/knowledge/en/3732450
3732450 - In Start Of Supply For Gas UTILMD 44002 Is Sent But The Deadline For Receiving APERAK...
During the Start of Supply for Gas (DSO View) (DE_C_GELIGAS_SOS_DSO) process, the response message UTILMD 44002 is sent, but the Sending of Aggregated Message...
https://userapps.support.sap.com/sap/support/knowledge/en/3744506
3744506 - APERAK Z18 in 55653 Send Process: Receiver Not Assigned to MaLo/MeLo for Referenced Time...
The 55653 sending process returns an APERAK because the receiver is not assigned to the MaLo or MeLo for the populated time interval, blocking message...