How To Fix COCM455 - No reservation found for assembly

SAP Error Message - Details

• Message type: E = Error

• Message class: COCM - Order Change Management

• Message number: 455

• Message text: No reservation found for assembly

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message COCM455 - No reservation found for assembly ?

  The SAP error message COCM455 ("No reservation found for assembly") typically occurs in the context of production planning and control, particularly when dealing with production orders and reservations for components needed for assembly.
  Cause:
  This error message indicates that the system could not find a reservation for the specified assembly item. This can happen for several reasons:
  
  
  No Reservations Created: There may not be any reservations created for the assembly item in question. Reservations are necessary to allocate stock for production orders.
  
  
  Incorrect Production Order: The production order may not be correctly linked to the reservation, or the order may not exist.
  
  
  Material Master Data Issues: The material master data for the assembly item may not be set up correctly, leading to issues in finding the associated reservations.
  
  
  Stock Availability: There may be stock available, but it is not reserved for the specific production order.
  
  
  Plant or Storage Location Issues: The assembly item may not be available in the specified plant or storage location.
  
  
  Solution:
  To resolve the COCM455 error, you can take the following steps:
  
  
  Check Reservations: Verify if there are any existing reservations for the assembly item. You can do this by using transaction codes like MB21 (Create Reservation) or MB22 (Change Reservation) to view existing reservations.
  
  
  Create a Reservation: If no reservations exist, create a reservation for the assembly item using the appropriate transaction code (e.g., MB21).
  
  
  Verify Production Order: Ensure that the production order is correctly created and that it is linked to the correct assembly item. You can check this using transaction code CO03 (Display Production Order).
  
  
  Check Material Master: Review the material master data for the assembly item to ensure that it is set up correctly. You can use transaction code MM03 (Display Material) to check the details.
  
  
  Check Stock Levels: Ensure that there is sufficient stock available for the assembly item in the relevant plant and storage location. You can check stock levels using transaction code MMBE (Stock Overview).
  
  
  Consult with Your SAP Team: If the issue persists, it may be beneficial to consult with your SAP support team or a functional consultant who can provide deeper insights into the configuration and data setup.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO03 (Display Production Order), MB21 (Create Reservation), MB22 (Change Reservation), and MMBE (Stock Overview).
  SAP Documentation: Refer to SAP Help documentation for detailed information on production orders, reservations, and material management.
  User Exits and BAdIs: If custom logic is involved, check for any user exits or BAdIs that might affect the reservation process.
  
  By following these steps, you should be able to identify the root cause of the COCM455 error and implement the necessary solutions to resolve it.