How To Fix WZRE_ALE_MONITOR017 - Definition of segments differ: & (& <-> & ). No comparison possible.

SAP Error Message - Details

• Message type: E = Error

• Message class: WZRE_ALE_MONITOR -

• Message number: 017

• Message text: Definition of segments differ: & (& <-> & ). No comparison possible.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message WZRE_ALE_MONITOR017 - Definition of segments differ: & (& <-> & ). No comparison possible. ?

  SAP Error Message:
  
  WZRE_ALE_MONITOR017 Definition of segments differ: & (& <-> & ). No comparison possible.
  
  Cause
  This error occurs during ALE (Application Link Enabling) monitoring or IDoc processing when the system tries to compare segment definitions between two versions or systems, but finds that the segment definitions differ. Specifically:
  
  The segment structure or definition in the sending system does not match the segment structure in the receiving system.
  This mismatch can be due to differences in segment fields, data element types, segment hierarchy, or segment attributes.
  Because of these differences, the system cannot perform a proper comparison or mapping of the segments.
  
  Common scenarios causing this error:
  
  Different versions of IDoc segment definitions between sender and receiver.
  Custom modifications or enhancements to standard IDoc segments in one system but not the other.
  Transport inconsistencies where segment definitions were changed in one system but not transported to the other.
  Using different message types or IDoc types that have similar but not identical segment structures.
  
  
  Solution
  
  
  Check Segment Definitions:
  
  Use transaction WE30 (IDoc Type Development) to display the segment definitions in both systems.
  Compare the segment structures, fields, and data elements for the segment mentioned in the error message.
  
  
  
  Align Segment Definitions:
  
  If differences are found, align the segment definitions by:
  
  Transporting the correct segment definitions from the source system to the target system.
  Adjusting custom segments or enhancements to be consistent across systems.
  
  
  
  
  
  Check IDoc Types and Message Types:
  
  Verify that the correct IDoc type and message type are used and consistent between sender and receiver.
  Use WE81 to check message type assignments.
  
  
  
  Re-import or Re-transport IDoc Metadata:
  
  If segment definitions were changed recently, ensure that the changes are transported properly.
  Re-import the IDoc metadata if necessary.
  
  
  
  Use ALE Tools for Comparison:
  
  Use transaction WE19 (Test tool for IDocs) to test IDoc processing.
  Use WE30 and WE31 to compare segment definitions.
  
  
  
  Check for SAP Notes:
  
  Search SAP Support Portal for notes related to WZRE_ALE_MONITOR017 or segment definition mismatches.
  Apply any relevant SAP Notes or patches.
  
  
  
  
  Related Information
  
  
  Transactions:
  
  WE30 - IDoc Type Development (Display/Change IDoc types and segments)
  WE31 - Segment Editor (Display/Change segments)
  WE19 - Test tool for IDocs
  WE81 - Message Type Assignment
  WE02 / WE05 - IDoc Display and Monitoring
  
  
  
  ALE and IDoc Concepts:
  
  ALE uses IDocs to transfer data between SAP systems.
  IDoc segments must be consistent between sender and receiver for successful processing.
  Segment definitions include fields, data elements, and hierarchy.
  
  
  
  SAP Notes and Documentation:
  
  Check SAP Notes for updates or known issues with segment definitions.
  Review SAP Help Portal documentation on ALE and IDoc processing.
  
  
  
  
  Summary
  The error WZRE_ALE_MONITOR017 Definition of segments differ indicates a mismatch in IDoc segment definitions between systems, preventing comparison or processing. The solution is to identify and align the segment definitions using SAP tools (WE30, WE31), ensure consistent IDoc types and message types, and transport any necessary changes to maintain consistency across systems.