How To Fix LTR2_KB_GUI085 - Please specify a logical field as parameter type.

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_KB_GUI - Message used in LTR2_KB_GUI

• Message number: 085

• Message text: Please specify a logical field as parameter type.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LTR2_KB_GUI085 - Please specify a logical field as parameter type. ?

  The SAP error message LTR2_KB_GUI085 with the description "Please specify a logical field as parameter type" typically occurs in the context of SAP's Logical Database (LDB) or when working with selection screens in ABAP programs. This error indicates that a parameter that is expected to be of a logical type (i.e., a boolean value that can be either true or false) has not been defined correctly.
  Cause:
  
  Incorrect Parameter Definition: The parameter in question may not have been defined as a logical field in the ABAP program or selection screen.
  Data Type Mismatch: The program might be trying to use a non-logical field where a logical field is expected.
  Configuration Issues: There may be issues in the configuration of the logical database or the way the selection screen is set up.
  
  Solution:
  
  
  Check Parameter Definition:
  
  Ensure that the parameter in your ABAP program is defined as a logical type. In ABAP, a logical field can be defined using the TYPE keyword with BOOLEAN or TYPE C LENGTH 1 with values 'X' (true) and ' ' (false).
  Example:
  DATA: lv_logical_field TYPE c LENGTH 1.
  
  
  
  
  Modify Selection Screen:
  
  If the error occurs on a selection screen, check the definition of the selection screen fields. Ensure that any field expected to be logical is defined correctly.
  Example:
  PARAMETERS: p_logical_field TYPE c LENGTH 1 AS CHECKBOX.
  
  
  
  
  Review Logical Database Configuration:
  
  If you are using a logical database, ensure that the fields being used in the selection criteria are correctly mapped and defined in the logical database.
  
  
  
  Debugging:
  
  Use the ABAP debugger to trace the execution of the program and identify where the logical field is being incorrectly handled.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more details on logical fields and their usage in ABAP programs.
  
  
  
  Related Information:
  
  Logical Fields in ABAP: Logical fields are often used in selection screens to allow users to make binary choices (e.g., Yes/No, True/False).
  ABAP Data Types: Familiarize yourself with ABAP data types, especially logical types, to avoid similar issues in the future.
  SAP Community: Engage with the SAP community forums for additional insights and solutions from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error message LTR2_KB_GUI085 and ensure that your parameters are correctly defined as logical fields.