How To Fix IN103 - A one-way link cannot be used as a two-way link

SAP Error Message - Details

• Message type: E = Error

• Message class: IN - Object Networking

• Message number: 103

• Message text: A one-way link cannot be used as a two-way link

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IN103 - A one-way link cannot be used as a two-way link ?

  The SAP error message IN103, which states "A one-way link cannot be used as a two-way link," typically occurs in the context of inventory management or logistics when dealing with stock transfer orders or similar processes. This error indicates that there is an attempt to use a one-way link (such as a stock transfer from one location to another) in a manner that requires a two-way link (which would imply a reciprocal relationship).
  Cause:
  
  One-Way Link Definition: In SAP, a one-way link is established when stock is transferred from one location to another without the expectation of a return transfer. This is common in scenarios where goods are sent to a customer or another location without the intention of receiving them back.
  Incorrect Configuration: The system may be configured incorrectly, leading to an attempt to treat a one-way transfer as if it were a two-way transfer.
  Document Type Issues: The document type used for the transfer may not support two-way links, or there may be a mismatch in the expected behavior of the document type.
  
  Solution:
  
  Review Transfer Process: Ensure that the transfer process you are trying to execute is appropriate for the type of link you are using. If it is a one-way transfer, ensure that you are not trying to create a two-way link.
  Check Configuration: Review the configuration settings in the SAP system related to stock transfers and document types. Ensure that the settings align with the intended use of one-way and two-way links.
  Use Correct Document Type: If a two-way link is required, ensure that you are using the correct document type that supports two-way transfers. This may involve creating a new document type or modifying an existing one.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the configuration of stock transfers and the implications of one-way versus two-way links.
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. They can provide insights based on the specific configuration and version of your SAP system.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  Transaction Codes: Familiarize yourself with transaction codes related to inventory management, such as MB1A (Goods Withdrawal), MB1B (Transfer Posting), and others that may be relevant to your process.
  Training and Documentation: Ensure that users involved in inventory management are trained on the correct processes and understand the implications of one-way and two-way links in SAP.
  
  By following these steps, you should be able to identify the cause of the IN103 error and implement a solution to resolve it.