How To Fix 06660 - Confirmation control key &1 not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: 06 -

• Message number: 660

• Message text: Confirmation control key &1 not allowed

What causes this issue?

You have changed the confirmation control key in a scheduling
agreement.
Either this is not possible, or the confirmation control key entered, (
&V1&) cannot be used.

System Response

You can only replace an existing confirmation control key by another
one if no confirmations or goods receipts have yet been entered for an
item.
<ZH>Acknowledgments of receipt (proof of delivery)</>
If confirmations and goods receipts have already been entered for an
item, you must use a new confirmation control key when implementing
acknowledgments of receipt (LE "proof of delivery" (POD)
functionality). This confirmation control key must be a) identical to
the previous one and b) <LS>POD-relevant</>.
That means that the new confirmation control key must define the same
confirmation categories and these confirmation categories must have the
same indicators for <LS>MRP-relevant</>, <LS>GR-relevant</> and <LS>GR
assignment</>.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Hidden text in German does NOT need to be translated. (Writer's notes)

How to fix this error?

Check and change your entries if necessary.
<ZH>Note</>
You maintain the confirmation control key in Customizing for
<ZK>Purchasing</> under <LS>Confirmations -> Set Up Confirmation
Control</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 06660 - Confirmation control key &1 not allowed ?

  The SAP error message "06660 Confirmation control key &1 not allowed" typically occurs in the context of production order confirmations or goods movements in SAP. This error indicates that the confirmation control key specified in the operation or order is not valid for the current context or configuration.
  
  Cause:
  
  Invalid Confirmation Control Key: The confirmation control key specified in the production order or operation is not defined in the system or is not allowed for the specific operation type.
  
  Configuration Issues: The configuration settings for the confirmation control key may not be set up correctly in the system.
  Authorization Issues: The user may not have the necessary authorizations to use the specified confirmation control key.
  Status of the Order: The production order may be in a status that does not allow confirmations with the specified control key.
  
  
  Solution:
  
  
  Check Confirmation Control Key: Verify that the confirmation control key specified in the order or operation is valid. You