How To Fix APJ_DT026 - Parameter &1 is not a checkbox or radio button

SAP Error Message - Details

• Message type: E = Error

• Message class: APJ_DT - Application job designtime

• Message number: 026

• Message text: Parameter &1 is not a checkbox or radio button

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message APJ_DT026 - Parameter &1 is not a checkbox or radio button ?

  The SAP error message APJ_DT026, which states "Parameter &1 is not a checkbox or radio button," typically occurs in the context of SAP GUI programming or when dealing with screen elements in a dialog program. This error indicates that the system is expecting a parameter to be a checkbox or radio button, but the provided parameter does not meet this requirement.
  Cause:
  
  Incorrect Parameter Type: The parameter defined in the screen or program is not of the type that can be represented as a checkbox or radio button. This could happen if the parameter is defined as a different type (e.g., a text field or numeric field).
  Screen Element Configuration: The screen element may not be configured correctly in the screen painter or the corresponding ABAP code.
  Data Type Mismatch: The data type of the parameter does not match the expected type for a checkbox or radio button.
  
  Solution:
  
  
  Check Parameter Definition: Review the parameter definition in the ABAP program or screen painter. Ensure that the parameter is defined as a checkbox or radio button.
  
  For checkboxes, the parameter should typically be defined as a CHAR1 type (with values 'X' for checked and space for unchecked).
  For radio buttons, ensure that the group name is correctly assigned and that the parameters are defined as part of the same group.
  
  
  
  Modify Screen Elements: If you are using a screen painter, check the properties of the screen elements. Make sure that the element is set to the correct type (checkbox or radio button) and that it is linked to the correct data element.
  
  
  Review ABAP Code: If the error occurs during the execution of an ABAP program, review the code to ensure that the parameters being passed to the screen or function module are of the correct type.
  
  
  Testing: After making the necessary changes, test the program or transaction again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Documentation: Refer to the SAP Help Portal or the ABAP documentation for more details on defining screen elements and parameters.
  SAP Community: Check forums and community discussions for similar issues and solutions shared by other SAP users.
  Debugging: Use the ABAP debugger to trace the execution and identify where the incorrect parameter type is being set or passed.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an experienced ABAP developer for further assistance.