How To Fix WZRE_ALE_MONITOR2019 - IDoc type differs (&1 <-> &2): Comparison useless

WZRE_ALE_MONITOR2019 - Overview

• Message type: E = Error

• Message class: WZRE_ALE_MONITOR2 - IDoc Monitor

• Message number: 019

• Message text: IDoc type differs (&1 <-> &2): Comparison useless

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WZRE_ALE_MONITOR2019 - IDoc type differs (&1 <-> &2): Comparison useless ?

  SAP Error Message:
  WZRE_ALE_MONITOR2019
  Text: IDoc type differs (&1 <-> &2): Comparison useless
  
  Cause
  This error occurs during ALE (Application Link Enabling) monitoring or IDoc processing when the system tries to compare two IDocs or IDoc types but finds that the IDoc types are different. Because the IDoc types do not match, the system cannot perform a meaningful comparison, rendering the comparison "useless."
  Typical scenarios include:
  
  The sender and receiver systems are expected to exchange IDocs of the same type, but the IDoc types differ.
  A mismatch in the IDoc type definitions between the sending and receiving systems.
  Incorrect partner profiles or message type assignments leading to different IDoc types being processed.
  Transport or configuration inconsistencies where the IDoc type in one system is not aligned with the other.
  
  
  Solution
  
  
  Check IDoc Types:
  
  Verify the IDoc types involved in the communication.
  Use transaction WE30 to check the IDoc types and their segments.
  Ensure that the IDoc types on both sender and receiver sides are