How To Fix REBDAO091 - Reservations outside period &1 exist. Change not possible.

SAP Error Message - Details

• Message type: E = Error

• Message class: REBDAO -

• Message number: 091

• Message text: Reservations outside period &1 exist. Change not possible.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message REBDAO091 - Reservations outside period &1 exist. Change not possible. ?

  The SAP error message REBDAO091 indicates that there are reservations that fall outside the specified period for a particular transaction or operation, and as a result, changes to the data are not possible. This typically occurs in the context of materials management, inventory management, or production planning where reservations are used to allocate stock for specific purposes.
  Cause:
  
  Reservations Outside Valid Period: The primary cause of this error is that there are existing reservations that are dated outside the period you are trying to modify. For example, if you are trying to change a reservation for a specific month, but there are reservations that extend beyond that month, the system will prevent the change.
  Period Locking: The period in which you are trying to make changes may be locked for posting or changes due to financial closing or other reasons.
  Configuration Issues: There may be configuration settings in the system that restrict changes to reservations based on certain criteria.
  
  Solution:
  
  Check Existing Reservations: Review the existing reservations to identify those that are outside the period you are trying to modify. You can do this by using transaction codes like MB22 (Change Reservation) or MB23 (Display Reservation).
  Adjust Reservations: If possible, adjust or delete the reservations that are causing the conflict. Ensure that any changes made do not disrupt other processes or requirements.
  Change the Period: If the reservations are valid and should remain, consider changing the period you are trying to modify to include the existing reservations.
  Consult with Finance: If the period is locked due to financial reasons, consult with your finance team to see if they can unlock the period or provide guidance on how to proceed.
  System Configuration: If the issue persists, it may be necessary to review the system configuration settings related to reservations and periods. This may require assistance from an SAP Basis or configuration expert.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MB22: Change Reservation
  MB23: Display Reservation
  MB21: Create Reservation
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation for reservations and period management to understand the implications of changing reservations and how periods are managed in your specific SAP environment.
  
  By following these steps, you should be able to resolve the REBDAO091 error and proceed with your intended changes.