How To Fix L1603 - Special stock number requires entry of special stock indicator

SAP Error Message - Details

• Message type: E = Error

• Message class: L1 - Message handling for WM master data

• Message number: 603

• Message text: Special stock number requires entry of special stock indicator

Self-Explanatory Message

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• What is the cause and solution for SAP error message L1603 - Special stock number requires entry of special stock indicator ?

  The SAP error message L1603, which states "Special stock number requires entry of special stock indicator," typically occurs in the context of inventory management and logistics when dealing with special stock types, such as consignment stock, project stock, or returnable packaging.
  Cause:
  This error arises when you are trying to process a transaction that involves special stock but have not specified the required special stock indicator. The special stock indicator is necessary for SAP to understand the type of special stock being referenced, as different types of special stock have different handling and accounting rules.
  Solution:
  To resolve this error, you should follow these steps:
  
  
  Identify the Transaction: Determine which transaction you are trying to perform (e.g., goods receipt, goods issue, stock transfer, etc.) that triggered the error.
  
  
  Check the Special Stock Indicator:
  
  Ensure that you have entered the correct special stock indicator in the relevant field. This is usually a dropdown or input field where you can select the type of special stock (e.g., consignment, project stock, etc.).
  The special stock indicator is typically a single character or a code that specifies the type of special stock.
  
  
  
  Review Master Data:
  
  Check the material master data for the item you are working with to ensure that it is set up correctly for special stock handling.
  Ensure that the material is defined as a special stock material if applicable.
  
  
  
  Consult Documentation: If you are unsure about which special stock indicator to use, refer to your organization's documentation or SAP help resources for guidance on the specific indicators relevant to your business processes.
  
  
  User Authorization: Ensure that you have the necessary permissions to enter or modify special stock indicators in the system.
  
  
  Testing: After making the necessary adjustments, try to reprocess the transaction to see if the error persists.
  
  
  Related Information:
  
  
  Special Stock Types: Common special stock types include:
  
  Consignment Stock: Stock that is owned by the vendor but stored at the customer’s location.
  Project Stock: Stock that is allocated to a specific project.
  Returnable Packaging: Packaging that is returned to the supplier after use.
  
  
  
  SAP Documentation: For more detailed information, you can refer to SAP's official documentation or help portal, which provides insights into special stock handling and configuration.
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MB1A: Goods Withdrawal
  MB1B: Transfer Posting
  MB1C: Other Goods Receipts
  
  
  
  If the issue 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.