How To Fix SD771 - Invalid link type &

SAP Error Message - Details

• Message type: E = Error

• Message class: SD - Online doc., terminology, translation, help

• Message number: 771

• Message text: Invalid link type &

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 SD771 - Invalid link type & ?

  The SAP error message "SD771 Invalid link type &" typically occurs in the Sales and Distribution (SD) module when there is an issue with the configuration or data related to the link types used in the system. This error can arise in various scenarios, such as during the creation of sales documents, delivery processing, or when trying to access certain functionalities that involve link types.
  Cause:
  
  Incorrect Link Type Configuration: The link type being referenced in the transaction may not be defined correctly in the system or may not exist.
  Data Inconsistencies: There may be inconsistencies in the master data or transaction data that reference the link type.
  Custom Development Issues: If there are custom developments or enhancements in the system, they may be incorrectly referencing link types.
  Missing Authorizations: Sometimes, the user may not have the necessary authorizations to access certain link types.
  
  Solution:
  
  
  Check Link Type Configuration:
  
  Go to the configuration settings in SAP (Transaction SPRO).
  Navigate to the relevant section for Sales and Distribution and check the link type settings.
  Ensure that the link type being referenced is defined and configured correctly.
  
  
  
  Review Master and Transaction Data:
  
  Check the master data (e.g., customer master, material master) and transaction data (e.g., sales orders, deliveries) for any inconsistencies or errors related to link types.
  Correct any discrepancies found.
  
  
  
  Debug Custom Code:
  
  If there are custom developments, review the code to ensure that it is correctly handling link types.
  Debugging may be necessary to identify where the invalid link type is being referenced.
  
  
  
  Check Authorizations:
  
  Ensure that the user encountering the error has the necessary authorizations to access the link types in question.
  Consult with your SAP security team if needed.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates that resolve the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP Support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as VA01 (Create Sales Order), VL01N (Create Outbound Delivery), and others where this error might occur.
  Documentation: Review SAP documentation related to Sales and Distribution configuration for more insights into link types and their usage.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify and resolve the "SD771 Invalid link type &" error in your SAP system.