How To Fix IEN173 - Automatic reservation is not a valid reference

SAP Error Message - Details

• Message type: E = Error

• Message class: IEN -

• Message number: 173

• Message text: Automatic reservation is not a valid reference

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IEN173 - Automatic reservation is not a valid reference ?

  The SAP error message IEN173, which states "Automatic reservation is not a valid reference," typically occurs in the context of inventory management or production planning when there is an issue with the automatic reservation process. This error can arise due to several reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  Invalid Reference Document: The reference document for the automatic reservation may not exist or may have been deleted.
  Incorrect Configuration: There may be issues with the configuration settings related to automatic reservations in the system.
  Data Inconsistencies: There could be inconsistencies in the master data, such as material master records or reservation records.
  Authorization Issues: The user may not have the necessary authorizations to create or view the automatic reservation.
  System Errors: There may be temporary system errors or issues with the database that prevent the reservation from being processed correctly.
  
  Solutions:
  
  Check Reference Document: Verify that the reference document (e.g., sales order, production order) exists and is valid. If it has been deleted or is inactive, you may need to create a new reference.
  Review Configuration: Check the configuration settings for automatic reservations in the relevant customizing transactions (e.g., SPRO). Ensure that the settings align with your business processes.
  Data Consistency Check: Perform a consistency check on the material master and reservation data. Use transaction codes like MM03 (Material Master) and MB22 (Change Reservation) to review the data.
  User Authorizations: Ensure that the user has the necessary authorizations to create and manage reservations. This can be checked in the user roles and profiles.
  System Logs: Check the system logs (transaction SLG1) for any related error messages that might provide more context on the issue.
  Consult SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide patches and updates.
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MB21 (Create Reservation), MB22 (Change Reservation), and MB23 (Display Reservation).
  Documentation: Review SAP documentation related to inventory management and automatic reservations for best practices and troubleshooting steps.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the IEN173 error and implement an appropriate solution.