How To Fix B1118 - The IDoc type for this message must not be reduced

B1118 - Overview

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 118

• Message text: The IDoc type for this message must not be reduced

What causes this issue?

This message may be used only as a reference for a reduction.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Use a new message with a reference message.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1118 - The IDoc type for this message must not be reduced ?

  The SAP error message B1118, "The IDoc type for this message must not be reduced," typically occurs when there is a mismatch between the expected structure of an IDoc (Intermediate Document) and the actual structure being sent or received. This error is often related to the configuration of IDocs in the SAP system, particularly when there are changes in the IDoc type or its segments.
  
  Cause:
  
  IDoc Structure Changes: The IDoc type has been modified, and the new structure does not match the expected structure. This can happen if segments have been added or removed.
  Message Type Configuration: The message type associated with the IDoc may have been incorrectly configured or not updated after changes were made to the IDoc type.
  Inconsistent Data: The data being sent may not conform to the expected structure defined in the IDoc type, leading to a reduction in the expected fields.
  Version Mismatch: There may be a version mismatch