How To Fix J3280 - Underying class & does not exist

J3280 - Overview

• Message type: E = Error

• Message class: J3 - Dialog Messages for Data Pool Entry Transactions

• Message number: 280

• Message text: Underying class & does not exist

What causes this issue?

You wanted to create a class using external data transfer. As an
underlying, you tried to transfer a class that does not exist in the
system.

System Response

The system transfers the data record anyway and outputs a warning.

How to fix this error?

Create the class for the underlying.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message J3280 - Underying class & does not exist ?

  The SAP error message J3280, which states "Underlying class & does not exist," typically occurs in the context of SAP's classification system. This error indicates that the system is trying to access a class that has not been defined or does not exist in the system.
  
  Cause:
  
  Missing Class Definition: The class that is being referenced in the transaction or program does not exist in the system.
  Incorrect Class Name: There may be a typo or incorrect naming in the class reference.
  Authorization Issues: The user may not have the necessary authorizations to view or access the class.
  Transport Issues: If the class was recently transported from another system, it may not have been transported correctly or may not exist in the target system.
  
  
  Solution:
  
  
  Check Class Definition:
  
  Go to the transaction code CL02 (Change Class) or CL03 (Display Class) and check if the class exists.
  If it does not exist, you may need to create it using transaction