How To Fix WSTRN002 - Cannot determine prepack number

SAP Error Message - Details

• Message type: E = Error

• Message class: WSTRN - Message for Prepack Creation and Planning Dialog

• Message number: 002

• Message text: Cannot determine prepack number

What causes this issue?

The system was unable to generate automatically a new prepack article
number

System Response

Processing cannot continue.

How to fix this error?

Report the error to SAP.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WSTRN002 - Cannot determine prepack number ?

  SAP Error Message:
  
  WSTRN002 - Cannot determine prepack number
  
  Cause:
  This error typically occurs in SAP Warehouse Management (WM) or Extended Warehouse Management (EWM) scenarios when the system is unable to determine or find the prepack number for a material during a warehouse process such as picking, packing, or goods issue.
  Common reasons include:
  
  The prepack number (prepack ID) is not maintained or assigned for the material in the system.
  Missing or incorrect configuration of prepack settings in the material master or warehouse management data.
  The system is expecting a prepack number due to process or configuration, but none is available or found.
  Incorrect or incomplete packaging instructions or packaging specifications.
  The prepack number is not maintained in the relevant packaging material or packaging specification master data.
  
  
  Solution:
  
  
  Check Material Master Data:
  
  Verify if the material has a prepack number assigned in the relevant views (e.g., WM data, packaging data).
  Use transaction MM03 to check the material master and ensure that the prepack number or packaging instructions are maintained.
  
  
  
  Maintain Packaging Specifications:
  
  Check packaging specifications in transaction CT04 or SPRO under Logistics Execution ? Packaging.
  Ensure that the prepack number is correctly maintained and linked to the material.
  
  
  
  Review Warehouse Management Configuration:
  
  Verify the configuration related to prepack handling in WM or EWM.
  Check if the process step or warehouse task expects a prepack number and adjust if necessary.
  
  
  
  Check Packaging Material Master:
  
  Ensure that the packaging material (if used as a prepack) is correctly maintained and active.
  
  
  
  Adjust Process or Master Data:
  
  If the process does not require a prepack number, adjust the process or configuration to not expect one.
  If a prepack is required, maintain the correct prepack number in the system.
  
  
  
  Debug or Analyze Logs:
  
  If the above steps do not resolve the issue, analyze the process flow or debug the relevant function modules to identify why the prepack number cannot be determined.
  
  
  
  
  Related Information:
  
  
  Transactions:
  
  MM03 - Display Material Master
  CT04 - Packaging Material
  SPRO - IMG for Packaging and Warehouse Management configuration
  LT03 / LT10 - Warehouse tasks and transfer orders (to check packing processes)
  
  
  
  SAP Notes and Documentation:
  
  Check SAP Notes related to packaging and prepack handling.
  Review SAP Help Portal documentation on Warehouse Management and Packaging.
  
  
  
  Typical Modules Involved:
  
  SAP WM (Warehouse Management)
  SAP EWM (Extended Warehouse Management)
  SAP LE (Logistics Execution)
  SAP MM (Material Management)
  
  
  
  
  Summary:
  The error WSTRN002 Cannot determine prepack number arises because the system expects a prepack number for a material but cannot find it. The solution involves verifying and maintaining the prepack number in the material master, packaging specifications, and warehouse management configuration to ensure the system can correctly identify the prepack during warehouse processes.