How To Fix >U307 - No free key up to no. &1 found for the returns lot

SAP Error Message - Details

• Message type: E = Error

• Message class: >U -

• Message number: 307

• Message text: No free key up to no. &1 found for the returns lot

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message >U307 - No free key up to no. &1 found for the returns lot ?

  The SAP error message "U307 No free key up to no. &1 found for the returns lot" typically occurs in the context of handling returns in the SAP system, particularly when dealing with inventory management or logistics execution. This error indicates that the system is unable to find a free key (or stock) for the specified returns lot number.
  Cause:
  
  No Available Stock: The most common cause is that there is no available stock for the specified returns lot. This could happen if all stock has already been allocated or if the stock has been moved or consumed.
  Lot Number Issues: The lot number specified may not exist in the system, or it may have been incorrectly entered.
  Stock Type Restrictions: The stock type associated with the returns lot may not allow for further processing (e.g., stock is blocked or in quality inspection).
  Configuration Issues: There may be configuration settings in the system that restrict the availability of stock for returns processing.
  
  Solution:
  
  Check Stock Availability: Verify if there is any stock available for the specified returns lot. You can do this by using transaction codes like MMBE (Stock Overview) or MB52 (List of Warehouse Stocks on Hand).
  Verify Lot Number: Ensure that the lot number you are using is correct and exists in the system. You can check this in the material master or by using transaction codes like MSC3N (Display Batch).
  Review Stock Type: Check the stock type of the returns lot. If it is blocked or in quality inspection, you may need to release it or change its status.
  Adjust Configuration: If the issue is related to configuration, consult with your SAP administrator or functional consultant to review the settings related to returns processing and stock management.
  Reprocess the Return: If the return was previously processed and is now causing issues, consider reversing the return and reprocessing it to see if the error persists.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MB1A (Goods Withdrawal), MB1B (Transfer Posting), and MIGO (Goods Movement) for handling inventory transactions.
  Batch Management: If your organization uses batch management, ensure that the batch management settings are correctly configured for the materials involved.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  Documentation: Review SAP documentation or user manuals related to inventory management and returns processing for additional guidance.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant for further investigation.