How To Fix SD_EXPRESSION059 - PRESERVE TYPE can only be used with CAST on a data element

SAP Error Message - Details

• Message type: E = Error

• Message class: SD_EXPRESSION - Messages processing AST expressions

• Message number: 059

• Message text: PRESERVE TYPE can only be used with CAST on a data element

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SD_EXPRESSION059 - PRESERVE TYPE can only be used with CAST on a data element ?

  The SAP error message SD_EXPRESSION059 indicates that there is an issue with the use of the PRESERVE TYPE keyword in conjunction with the CAST function in ABAP (Advanced Business Application Programming). This error typically arises when the PRESERVE TYPE is incorrectly applied to a data element that does not support it.
  Cause:
  The error occurs when:
  
  You are trying to use PRESERVE TYPE with a data type that is not compatible with the CAST operation.
  The CAST operation is being applied to a type that does not have a defined structure or is not a reference type.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Data Type: Ensure that the data type you are trying to cast is compatible with the PRESERVE TYPE option. The PRESERVE TYPE option is typically used with reference types or structured types.
  
  
  Remove PRESERVE TYPE: If the data type does not support PRESERVE TYPE, consider removing it from your CAST statement. For example:
  DATA(lv_value) = CAST some_type( lv_variable ).
  If some_type does not support PRESERVE TYPE, simply use:
  DATA(lv_value) = CAST some_type( lv_variable ).
  
  
  Use Correct Casting: If you need to preserve the type, ensure that you are using it correctly. For example, if you are working with a reference type, ensure that the variable you are casting is indeed a reference type.
  
  
  Review Documentation: Consult the ABAP documentation for the specific data types and their compatibility with CAST and PRESERVE TYPE. This can provide insights into the correct usage.
  
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with the different data types in ABAP, including elementary types, structured types, and reference types.
  CAST Statement: Understand how the CAST statement works in ABAP, including its syntax and the types of conversions it supports.
  SAP Notes and Community: Check SAP Notes or the SAP Community for any known issues or additional guidance related to this error message.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.