How To Fix DMCLG171 - Attribute name &1 not known, declare as implementable interface

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 171

• Message text: Attribute name &1 not known, declare as implementable interface

What causes this issue?

The global class attribute has not been recognized. Check the class in
the ABAP Workbench Class Builder.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG171 - Attribute name &1 not known, declare as implementable interface ?

  The SAP error message DMCLG171 indicates that there is an issue with an attribute name that is not recognized in the context of a data model or an implementable interface. This error typically arises in the context of SAP Data Modeling, particularly when working with Core Data Services (CDS) views or when defining data models in SAP HANA.
  Cause:
  The error occurs when:
  
  An attribute name specified in your data model does not exist or is misspelled.
  The attribute is not declared in the relevant interface or data structure.
  There is a mismatch between the attribute name used in the implementation and the one defined in the interface.
  
  Solution:
  To resolve the DMCLG171 error, you can follow these steps:
  
  
  Check Attribute Name: Verify that the attribute name specified in your data model is correct. Ensure there are no typos or case sensitivity issues.
  
  
  Declare Attribute in Interface: If the attribute is indeed missing, you need to declare it in the relevant interface. This involves:
  
  Opening the interface definition.
  Adding the attribute to the interface with the correct data type.
  
  
  
  Implement the Interface: If you are implementing an interface, ensure that all attributes defined in the interface are implemented in your class or data model. This includes providing the necessary getter and setter methods if applicable.
  
  
  Recompile the Object: After making changes, recompile the object (e.g., the CDS view or the ABAP class) to ensure that the changes take effect.
  
  
  Check Dependencies: If the attribute is part of a larger data model, check for any dependencies or related objects that might also need to be updated.
  
  
  Consult Documentation: If you are unsure about the correct attribute names or their definitions, refer to the SAP documentation or the data model documentation for guidance.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found.
  Debugging: Use debugging tools in SAP to trace where the error is occurring and gather more context about the data model and its attributes.
  
  By following these steps, you should be able to identify the cause of the DMCLG171 error and implement a solution to resolve it.