How To Fix VO751 - Unexpected return code &1 during call of WS_PICK_WAV_READ_PREPARE

SAP Error Message - Details

• Message type: E = Error

• Message class: VO - W&S: Rough workload forecast + picking wave

• Message number: 751

• Message text: Unexpected return code &1 during call of WS_PICK_WAV_READ_PREPARE

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 VO751 - Unexpected return code &1 during call of WS_PICK_WAV_READ_PREPARE ?

  Certainly! Here's a detailed explanation regarding the SAP error message:
  
  SAP Error Message:
  VO751 Unexpected return code &1 during call of WS_PICK_WAV_READ_PREPARE
  
  Cause:
  This error occurs during the execution of a warehouse task or wave picking process in SAP Extended Warehouse Management (EWM) or Warehouse Management (WM) when the system calls the function module or method WS_PICK_WAV_READ_PREPARE. The function module is responsible for preparing the picking wave data.
  The error message indicates that an unexpected return code was received from the function module, which means the process encountered an issue that was not anticipated or handled properly.
  Common causes include:
  
  Data inconsistencies in the wave or warehouse task data.
  Incorrect or incomplete configuration of the wave or picking process.
  Missing or incorrect master data related to warehouse tasks, waves, or storage bins.
  Authorization issues or missing permissions for the user executing the process.
  Custom enhancements or user exits that interfere with the standard process.
  System inconsistencies or transport issues that cause the function module to behave unexpectedly.
  
  
  Solution:
  To resolve the error, follow these steps:
  
  
  Check the Return Code &1:
  
  The message includes a placeholder &1 which will be replaced by the actual return code. Identify the exact return code to understand the specific issue.
  
  
  Analyze the Wave and Warehouse Task Data:  
  
  Verify that the wave picking data is consistent and complete.
  Check if the warehouse tasks linked to the wave are correctly created and not locked or deleted.
  Use transaction codes like /SCWM/WAVE or /SCWM/WT to review wave and warehouse task details.
  
  
  
  Review Configuration:  
  
  Ensure that the wave and picking process configuration is correct.
  Check the wave template and picking control parameters.
  
  
  
  Check Authorizations:  
  
  Verify that the user has the necessary authorizations to execute wave picking and warehouse task processing.
  
  
  
  Debug the Function Module:  
  
  If you have development access, debug the function module WS_PICK_WAV_READ_PREPARE to see where the unexpected return code is generated.
  Look for any custom code or user exits that might affect the process.
  
  
  
  Check for OSS Notes:  
  
  Search SAP Support Portal for OSS Notes related to error VO751 or the function module WS_PICK_WAV_READ_PREPARE.
  Apply any relevant patches or corrections.
  
  
  
  System Consistency Checks:  
  
  Run consistency checks for warehouse tasks and waves.
  Check for any transport or system inconsistencies.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:  
  
  /SCWM/WAVE - Wave Management  
  /SCWM/WT - Warehouse Task Monitor  
  /SCWM/PRDO - Process Warehouse Tasks
  
  
  
  Function Module:  
  
  WS_PICK_WAV_READ_PREPARE is part of the warehouse picking process, responsible for preparing wave picking data.
  
  
  
  SAP Notes and KBAs:  
  
  Search for SAP Notes with keywords like "VO751", "WS_PICK_WAV_READ_PREPARE", "wave picking error".
  Example SAP Note (hypothetical): 1234567 - "Error VO751 during wave picking: Unexpected return code"
  
  
  
  Related Modules:  
  
  SAP EWM (Extended Warehouse Management)  
  SAP WM (Warehouse Management)
  
  
  
  
  If the problem persists after these checks, consider raising a support ticket with SAP, providing detailed logs, return codes, and system information.
  
  Summary:
  
  The VO751 error with unexpected return code during WS_PICK_WAV_READ_PREPARE indicates a problem in wave picking preparation, often due to data or configuration issues. Investigate the return code, check wave and warehouse task data, review configuration and authorizations, debug if possible, and consult SAP Notes for fixes.
  
  If you provide the actual return code (&1 value), I can help you further narrow down the cause.