How To Fix WER147 - Data reference of type &1 cannot be created

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 147

• Message text: Data reference of type &1 cannot be created

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER147 - Data reference of type &1 cannot be created ?

  The SAP error message WER147: Data reference of type &1 cannot be created typically occurs when there is an attempt to create a data reference (field symbol or data reference variable) for a data type that is not allowed or not supported in the current context.
  
  Cause
  
  The error arises because the system cannot create a data reference for the specified data type.
  This usually happens when the data type is:
  
  A reference type that cannot be referenced again (e.g., a data reference to a data reference).
  An incompatible or undefined type.
  A type that does not support referencing, such as certain built-in types or complex types that are not allowed to be referenced.
  
  
  It can also occur if the data type name passed to the CREATE DATA statement or the GET REFERENCE OF statement is incorrect or not fully qualified.
  
  
  Typical Scenario
  Example ABAP code that might cause this error:
  DATA: ref TYPE REF TO data,
        ref_ref TYPE REF TO REF TO data.
  
  CREATE DATA ref TYPE 'REF TO data'. " This is invalid and causes WER147
  Or:
  DATA: ref TYPE REF TO data.
  
  CREATE DATA ref TYPE 'REF TO REF TO data'. " Trying to create a reference to a reference
  
  Solution
  
  
  Check the data type you are trying to create a reference for:
  
  Ensure that the data type is a valid, non-reference type.
  You cannot create a data reference to a reference type (i.e., no "REF TO REF TO" types).
  
  
  
  Correct the type name:
  
  Make sure the type name passed to CREATE DATA or GET REFERENCE OF is correct and fully qualified if necessary.
  For example, use 'I' for integer, 'C' for character, or a valid structure name.
  
  
  
  Avoid creating references to references:
  
  If you need to reference a data reference, reconsider your design.
  Usually, a single level of referencing is sufficient.
  
  
  
  Use appropriate syntax:
  
  
  For example, to create a data reference to an integer:
  DATA: ref TYPE REF TO data.
  CREATE DATA ref TYPE i.
  
  
  
  
  If you want to create a reference to a reference, redesign your data model.
  
  
  
  Related Information
  
  
  ABAP Documentation on Data References:
  
  SAP Help Portal: Data References
  
  
  SAP Notes and Community:
  
  Search for WER147 in SAP Notes or SAP Community for specific cases and patches.
  
  
  Common ABAP Statements Involved:  
  
  CREATE DATA  
  GET REFERENCE OF  
  Field symbols (FIELD-SYMBOLS <fs> TYPE ...)
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WER147: Data reference of type &1 cannot be created
  
  
  Cause
  Attempt to create a data reference for an invalid or unsupported data type (e.g., reference to reference)
  
  
  Solution
  Use valid, non-reference data types; avoid references to references; verify type names
  
  
  Related
  ABAP data references, CREATE DATA statement, SAP Notes, SAP Community
  
  
  
  
  If you provide the exact code snippet causing the error, I can help you pinpoint the issue more precisely.