How To Fix TT190 - Parameter &: Only variable & & is permitted

SAP Error Message - Details

• Message type: E = Error

• Message class: TT - Extended Computer Aided Test Tool (eCATT) messages

• Message number: 190

• Message text: Parameter &: Only variable & & is permitted

What causes this issue?

The export parameters returned can only be assigned to 'V'
variables (&V01..&V20) or to export parameters (&E01..&E05).

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?

Only use 'V' variables (&V01..&V20) or export parameters
(&E01..&E05) in the field 'Return in'. To assign these values to
other variables, use the 'SETVAR' function in the function screen.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TT190 - Parameter &: Only variable & & is permitted ?

  The SAP error message TT190, which states "Parameter &: Only variable & & is permitted," typically occurs in the context of ABAP programming or when dealing with parameterized queries or function calls. This error indicates that there is an issue with the way parameters are being defined or used in your code.
  Cause:
  
  Incorrect Parameter Definition: The error often arises when a parameter is not defined correctly or is being used in a way that is not allowed. For example, using a constant or a literal value where a variable is expected.
  Syntax Errors: There may be syntax errors in the code that lead to the misinterpretation of parameters.
  Dynamic SQL Issues: If you are using dynamic SQL, the parameters may not be correctly formatted or passed.
  
  Solution:
  
  
  Check Parameter Definitions: Ensure that all parameters are defined as variables and not as constants or literals. For example, if you are using a SELECT statement, make sure that the parameters are variables that can hold values.
  DATA: lv_variable TYPE string.
  SELECT * FROM your_table WHERE your_field = lv_variable.
  
  
  Review Syntax: Go through your code to check for any syntax errors. Make sure that you are using the correct syntax for defining and using parameters.
  
  
  Use Proper Variable Types: Ensure that the variables you are using as parameters are of the correct type and length as expected by the function or method you are calling.
  
  
  Debugging: If the error persists, use the ABAP debugger to step through your code and identify where the issue is occurring. This can help you pinpoint the exact line or operation that is causing the error.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources for the specific function or method you are using to ensure that you are following the correct parameter conventions.
  
  
  Related Information:
  
  ABAP Documentation: Check the official SAP Help Portal for detailed documentation on ABAP programming and parameter handling.
  SAP Community: Engage with the SAP Community forums where you can find discussions and solutions related to similar issues.
  Error Handling: Implement error handling in your ABAP code to gracefully manage unexpected situations and provide meaningful error messages.
  
  By following these steps, you should be able to resolve the TT190 error and ensure that your parameters are correctly defined and used in your SAP ABAP programs.