How To Fix W+655 - Class type & not defined

SAP Error Message - Details

• Message type: E = Error

• Message class: W+ -

• Message number: 655

• Message text: Class type & not defined

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W+655 - Class type & not defined ?

  SAP Error Message:
  W+655 Class type & not defined
  
  
  Cause:
  This warning message occurs when the system tries to reference a class type that has not been defined or declared in the current ABAP program or environment. Essentially, the class type specified by the placeholder & (which will be replaced by the actual class name in the runtime message) is unknown to the system at the point where it is being used.
  Common scenarios include:
  
  The class has not been created or activated in the system.
  The class name is misspelled or incorrect.
  The class is defined in another package or namespace that is not properly referenced.
  The program or include where the class is used does not have the necessary CLASS or TYPE declarations.
  Missing or incorrect INCLUDE or TYPE statements that should bring the class definition into scope.
  
  
  
  Solution:
  
  
  Check Class Existence:
  
  Verify that the class mentioned in the error message actually exists in the system.
  Use transaction SE24 (Class Builder)