How To Fix RU021 - Confirmation no. &1 does not correspond to order &2, check entry

SAP Error Message - Details

• Message type: E = Error

• Message class: RU - Messages for order completion confirmation

• Message number: 021

• Message text: Confirmation no. &1 does not correspond to order &2, check entry

What causes this issue?

When an order is created, the system assigns a different confirmation
number to each operation contained in the order. The number is printed
on the shop floor papers.
The confirmation number and the order number that you have entered do
not fit together.

How to fix this error?

There are two options:
Enter the confirmation number only (see shop papers).
Enter data which identifies the operation (for example order number,
sequence number and operation number).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RU021 - Confirmation no. &1 does not correspond to order &2, check entry ?

  The SAP error message RU021 indicates that there is a mismatch between the confirmation number and the order number in the system. This typically occurs during the confirmation process in production or order management when the system cannot find a valid link between the confirmation and the corresponding order.
  Cause:
  
  Incorrect Confirmation Number: The confirmation number entered does not match any existing confirmations for the specified order.
  Order Number Mismatch: The order number provided does not correspond to the confirmation number in the database.
  Data Entry Errors: Typographical errors during data entry can lead to this issue.
  Deleted or Inactive Orders: The order may have been deleted or is no longer active, leading to the confirmation being invalid.
  System Configuration Issues: There may be configuration issues in the system that affect how confirmations are processed.
  
  Solution:
  
  Verify Confirmation and Order Numbers: Double-check the confirmation number and order number for accuracy. Ensure that they are entered correctly without any typographical errors.
  Check Order Status: Ensure that the order is still active and has not been deleted or archived. You can do this by checking the order status in the relevant transaction (e.g., CO03 for production orders).
  Review Confirmation Data: Use transaction codes like CO15 (for production confirmations) to review existing confirmations and ensure that the confirmation number corresponds to the correct order.
  Re-enter Confirmation: If the confirmation number is indeed incorrect, re-enter the confirmation with the correct details.
  Consult with IT Support: If the issue persists, it may be necessary to consult with your SAP support team or IT department to investigate any underlying system issues or configuration problems.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CO15 (for confirmations), CO03 (to display production orders), and CO02 (to change production orders).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional insights or solutions.
  User Documentation: Refer to SAP user manuals or help documentation for guidance on handling confirmations and orders.
  
  By following these steps, you should be able to resolve the RU021 error and successfully process the confirmation in SAP.