How To Fix IWO_BAPI201 - Internal error: SUMNR for suboperation &1/&2 cannot be determined for &3

IWO_BAPI201 - Overview

• Message type: E = Error

• Message class: IWO_BAPI - BAPIs for ALM Orders: Messages

• Message number: 201

• Message text: Internal error: SUMNR for suboperation &1/&2 cannot be determined for &3

Self-Explanatory Message

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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 IWO_BAPI201 - Internal error: SUMNR for suboperation &1/&2 cannot be determined for &3 ?

  The SAP error message "IWO_BAPI201 Internal error: SUMNR for suboperation &1/&2 cannot be determined for &3" typically occurs in the context of work order processing, particularly when dealing with suboperations in maintenance orders or production orders. This error indicates that the system is unable to determine the sequence number (SUMNR) for a specified suboperation.
  Causes:
  
  Missing Configuration: The suboperation may not be properly configured in the system, leading to the inability to retrieve the sequence number.
  Data Inconsistencies: There may be inconsistencies or missing data in the order or operation records that prevent the system from determining the SUMNR.
  Custom Enhancements: If there are custom enhancements or modifications in the BAPI or related processes, they might interfere with the standard logic.
  Incorrect Input Data: The input data provided to the BAPI might be incorrect or incomplete, leading to the inability to find the required SUMNR.
  
  Solutions:
  
  Check Configuration: Ensure that the suboperations are correctly configured in the