How To Fix C/021 - Sub-operations are currently not supported

C/021 - Overview

• Message type: E = Error

• Message class: C/ -

• Message number: 021

• Message text: Sub-operations are currently not supported

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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C/021 - Details

• The SAP error message C/021, which states "Sub-operations are currently not supported," typically occurs in the context of production planning and control, particularly when dealing with operations in a routing or production order. This error indicates that the system does not support the use of sub-operations in the current configuration or context.
  
  Cause:
  
  Routing Configuration: The routing may have been set up with sub-operations, but the system or the specific transaction you are using does not support them.
  System Settings: The configuration settings in the SAP system may not allow for sub-operations. This could be due to the version of SAP you are using or specific settings in the production planning module.
  Transaction Limitations: Certain transactions or processes in SAP may not support sub-operations, leading to this error when attempting to execute them.
  
  
  Solution:
  
  Check Routing: Review the routing for the production order or process you are working with. If sub-operations are not necessary, consider removing