How To Fix /PM0/3FWM_TOOL402 - &1 is an interface and not a class

/PM0/3FWM_TOOL402 - Overview

• Message type: E = Error

• Message class: /PM0/3FWM_TOOL -

• Message number: 402

• Message text: &1 is an interface and not a class

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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Smart SAP Assistant

• What is the cause and solution for SAP error message /PM0/3FWM_TOOL402 - &1 is an interface and not a class ?

  The SAP error message /PM0/3FWM_TOOL402 &1 is an interface and not a class typically indicates that there is an attempt to use an interface in a context where a class is expected. This can occur in various scenarios, such as when trying to instantiate an interface or when using an interface in a place where a class type is required.
  
  Cause:
  
  Incorrect Usage: The error usually arises when a developer mistakenly tries to create an instance of an interface or uses an interface in a context that requires a concrete class.
  Code Logic Error: There may be a logical error in the code where the interface is being treated as a class.
  
  Configuration Issues: Sometimes, configuration settings or mappings in the system may incorrectly reference an interface instead of a class.
  
  
  Solution:
  
  
  Check Code: Review the code where the error occurs. Ensure that you are not trying to instantiate an interface. Instead, you should be using