How To Fix C1153 - Class &(&) not found

SAP Error Message - Details

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 153

• Message text: Class &(&) not found

What causes this issue?

The source system contains an allocation to class &v1&, class type
&v2&. However, class &v1& has not been created in the target system, so
this allocation cannot be maintained.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Create class &v1& with the same attributes as the class in the source
system. Import the allocation data again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1153 - Class &(&) not found ?

  The SAP error message C1153, which states "Class &(&) not found," typically occurs when the system is unable to locate a specified class in the ABAP environment. This can happen for several reasons, including:
  Causes:
  
  Class Not Created: The class you are trying to use has not been created or activated in the system.
  Incorrect Class Name: There may be a typo or incorrect naming in the class reference.
  Transport Issues: If the class was recently transported from another system, it may not have been imported correctly.
  Authorization Issues: The user may not have the necessary authorizations to access the class.
  Namespace Issues: The class might be in a different namespace that is not accessible in the current context.
  
  Solutions:
  
  Check Class Existence: Use transaction SE24 (Class Builder) to verify if the class exists. If it does not, you may need to create it.
  Correct Class Name: Double-check the spelling and case of the class name in your code. ABAP is case-sensitive.
  Transport Check: If the class was supposed to be transported, check the transport logs to ensure it was successfully imported.
  Authorization Check: Ensure that the user has the necessary authorizations to access the class. You can check this in transaction SU53 after the error occurs.
  Namespace Verification: If the class is in a different namespace, ensure that you have the correct access rights to that namespace.
  
  Related Information:
  
  
  Transaction Codes:
  
  SE24: Class Builder to create or check classes.
  SE80: Object Navigator to explore various objects including classes.
  SU53: Authorization check to see if there are any authorization issues.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on class creation and management in ABAP.
  
  
  Debugging: If you are debugging a program that is throwing this error, you can set breakpoints to see where the class is being called and trace back to find the root cause.
  
  
  If the issue persists after checking these points, it may be beneficial to consult with your SAP Basis team or a developer with experience in ABAP for further assistance.