How To Fix L6020 - Communication record received is not for WM (no WM prefix)

L6020 - Overview

• Message type: E = Error

• Message class: L6 - LVS Link R/2 - ECC

• Message number: 020

• Message text: Communication record received is not for WM (no WM prefix)

What causes this issue?

The communication record was transmitted to the decentralized R/3
Warehouse Management (WM) system (R/2-R/3 Link) even though it was not
intended for that system. All communication records that are sent to the
WM system must have the prefix "WM" in the first two positions of the
record type. This means that all communication records sent to the
receiving program SAPL06D in the decentralized system without the "WM"
prefix will not be received and the transmission will be interrupted.

How to fix this error?

Check the communication document in a the R/2 System giving special
notice to the record type. Depending upon the record type (for example,
"SD" for decentralized shipping) define the correct program and module
of the target system in the corresponding queue.

Error message extract from SAP system. Copyright SAP SE.

L6020 - Details

• The SAP error message L6020, which states "Communication record received is not for WM (no WM prefix)," typically occurs in the context of Warehouse Management (WM) processes. This error indicates that the system has received a communication record that does not have the expected Warehouse Management (WM) prefix, which is necessary for the system to process the record correctly.
  
  Cause:
  
  Incorrect Data Format: The communication record being processed does not conform to the expected format for WM records. This could be due to a missing or incorrect prefix that identifies the record as a WM-related entry.
  Integration Issues: If there are integrations with other systems (like EDI or third-party logistics), the data being sent may not be formatted correctly for SAP WM.
  
  Configuration Issues: There may be configuration settings in the WM module that are not set up correctly, leading to the system not recognizing the incoming records.
  
  
  Solution:
  
  Check the Data Source: Verify the source