How To Fix 68638 - Items without a ref. unit can only be processed individually

SAP Error Message - Details

• Message type: E = Error

• Message class: 68 - Message for DARWIN Loans (continued)

• Message number: 638

• Message text: Items without a ref. unit can only be processed individually

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 68638 - Items without a ref. unit can only be processed individually ?

  The SAP error message 68638, "Items without a ref. unit can only be processed individually," typically occurs in the context of inventory management or procurement processes when you are trying to process multiple items that do not have a reference unit of measure defined. This can happen in various transactions, such as goods movements, purchase orders, or inventory adjustments.
  Cause:
  
  Missing Reference Unit of Measure: The items you are trying to process do not have a reference unit of measure defined in the material master. The reference unit of measure is necessary for certain operations, especially when dealing with multiple items.
  Batch Processing Restrictions: SAP restricts batch processing of items that lack a reference unit of measure to prevent inconsistencies in inventory management and reporting.
  Transaction Type: The specific transaction you are using may require that all items have a reference unit of measure to be processed in bulk.
  
  Solution:
  
  
  Check Material Master: 
  
  Go to the material master record (transaction code MM03) for the affected items.
  Ensure that a reference unit of measure is defined. If it is missing, you can add it using transaction code MM02 (Change Material).
  
  
  
  Process Individually: If you cannot define a reference unit of measure for the items, you may need to process each item individually rather than in bulk. This can be done by selecting each item one at a time in the transaction.
  
  
  Review Configuration: If this issue occurs frequently, it may be worth reviewing the configuration settings in your SAP system to ensure that reference units of measure are being set up correctly for new materials.
  
  
  Consult Documentation: Check SAP documentation or help files for specific details related to the transaction you are using, as there may be additional requirements or settings that need to be adjusted.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) for managing material master data.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to make changes to the material master or to process transactions.
  SAP Notes: Check for any SAP Notes related to this error message, as there may be patches or updates that address specific issues or provide additional guidance.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in inventory management or procurement processes.