How To Fix SK602 - Combination (&) and (&) is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: SK - SAPcomm messages

• Message number: 602

• Message text: Combination (&) and (&) is invalid

What causes this issue?

An invalid combination of service &V1& and document type &V2& was
entered.

System Response

A telecommunications request cannot be created with this combination of
service and document type.

How to fix this error?

- Correct the data entered.
- Check whether a suitable server can be configured.
Ask your system administrator to call transactions SCOM and SKRT.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SK602 - Combination (&) and (&) is invalid ?

  The SAP error message SK602, which states "Combination (&) and (&) is invalid," typically occurs in the context of SAP's controlling (CO) module, particularly when dealing with cost centers, internal orders, or other master data combinations. This error indicates that the combination of the specified elements (like cost center and internal order) is not valid according to the configuration or settings in the system.
  Causes:
  
  Invalid Master Data: The combination of the specified cost center and internal order may not exist in the system or may not be active.
  Configuration Issues: The configuration settings in the controlling area may not allow the specified combination. For example, certain cost centers may not be allowed to post to specific internal orders.
  Period Locking: The posting period may be closed, preventing any transactions from being recorded against the specified combination.
  Authorization Issues: The user may not have the necessary authorizations to post to the specified combination.
  
  Solutions:
  
  Check Master Data: Verify that both the cost center and internal order exist and are active. You can do this by navigating to the relevant master data transactions (e.g., KS03 for cost centers, KO03 for internal orders).
  Review Configuration: Check the configuration settings in the controlling area to ensure that the combination is allowed. This may involve reviewing the settings in the controlling module (transaction OKKP for controlling area settings).
  Open Posting Period: Ensure that the posting period is open for the transaction you are trying to execute. You can check this in the transaction OB52.
  Authorization Check: Ensure that the user has the necessary authorizations to post to the specified combination. This may involve checking user roles and authorizations in transaction SU01 or SU53.
  Consult Documentation: If the issue persists, consult SAP documentation or reach out to your SAP support team for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as KS03 (Display Cost Center), KO03 (Display Internal Order), and OKKP (Controlling Area Settings).
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  User Forums: Consider searching or posting in SAP community forums for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the SK602 error and implement a solution to resolve it.