How To Fix /PLMB/BA_NAV035 - Class &1 does not exist or does not implement interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /PLMB/BA_NAV -

• Message number: 035

• Message text: Class &1 does not exist or does not implement interface &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PLMB/BA_NAV035 - Class &1 does not exist or does not implement interface &2 ?

  The SAP error message /PLMB/BA_NAV035 Class &1 does not exist or does not implement interface &2 typically occurs in the context of SAP Business Application Studio or when working with Business Application Programming Interfaces (BAPIs) in SAP. This error indicates that the system is trying to access a class that either does not exist or does not implement a required interface.
  Cause:
  
  Class Does Not Exist: The specified class (&1) is not defined in the system. This could be due to a typo in the class name or the class not being activated or transported to the system.
  Class Does Not Implement Interface: The class exists, but it does not implement the specified interface (&2). This could happen if the class was designed without the necessary interface or if the interface has been changed or removed.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the class or interface.
  Transport Issues: If the class was recently transported from another system, it may not have been transported correctly.
  
  Solution:
  
  
  Check Class Existence:
  
  Use transaction code SE24 (Class Builder) to check if the class exists in the system. If it does not exist, you may need to create it or transport it from another system.
  
  
  
  Check Interface Implementation:
  
  If the class exists, check if it implements the required interface. You can do this in SE24 by viewing the class's details and checking the "Interfaces" tab.
  If the class does not implement the interface, you may need to modify the class to implement it or check if the correct class is being referenced.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to access the class and interface. You can check this with transaction SU53 or by consulting with your security team.
  
  
  
  Transport Check:
  
  If the class was recently transported, verify that the transport request was successful and that all necessary objects were included in the transport.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can set breakpoints to see where the error is being triggered and gather more context about the issue.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. You can search for the error message number or keywords in the SAP Support Portal.
  Documentation: Review the documentation for the specific BAPI or class you are working with to ensure you are using it correctly.
  Community Forums: Consider checking SAP Community forums or other developer forums for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution. If the issue persists, consider reaching out to SAP support for further assistance.