How To Fix VL431 - Serial numbers cannot be assigned to item &1

SAP Error Message - Details

• Message type: E = Error

• Message class: VL -

• Message number: 431

• Message text: Serial numbers cannot be assigned to item &1

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 VL431 - Serial numbers cannot be assigned to item &1 ?

  The SAP error message VL431 ("Serial numbers cannot be assigned to item &1") typically occurs during the processing of delivery documents when there is an issue with the assignment of serial numbers to items in the delivery. Here are the common causes, solutions, and related information for this error:
  Causes:
  
  Serial Number Management Not Active: The material in question may not have serial number management activated in the material master data.
  Incorrect Item Category: The item category of the delivery may not support serial number assignment.
  Missing Serial Number: The system may not find a valid serial number for the item being processed.
  Delivery Item Status: The item may be in a status that does not allow for serial number assignment (e.g., already delivered or canceled).
  Configuration Issues: There may be configuration issues in the serial number management settings in the system.
  
  Solutions:
  
  Check Material Master: Verify that the material master for the item has serial number management activated. This can be done in the material master record (MM02) under the "Sales: General/Plant" or "Plant Data/Storage" views.
  Review Item Category: Ensure that the item category used in the delivery supports serial number assignment. You can check this in the configuration settings for item categories.
  Assign Serial Numbers: If the item requires a serial number, ensure that a valid serial number is assigned to the item in the delivery. You can do this in the delivery document by navigating to the serial number assignment screen.
  Check Delivery Status: Ensure that the delivery item is in a status that allows for serial number assignment. If the item has already been processed, you may need to reverse the delivery or create a new one.
  Configuration Review: If the issue persists, review the configuration settings for serial number management in the SAP system. This may involve checking the settings in SPRO under Logistics Execution > Shipping > Delivery > Define Serial Number Management.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like VL01N (Create Delivery), VL02N (Change Delivery), and VL03N (Display Delivery) to work with delivery documents.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to serial number management and the VL431 error.
  Documentation: Refer to SAP Help documentation for detailed information on serial number management and delivery processing.
  
  If the problem persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in logistics and inventory management.