How To Fix 28085 - Invalid variable name &1

SAP Error Message - Details

• Message type: E = Error

• Message class: 28 - Configuration

• Message number: 085

• Message text: Invalid variable name &1

What causes this issue?

The syntax check found an error in a variable definition.

System Response

The cursor shows where in your entry the error occurs.

How to fix this error?

You have entered names for object-specific or characteristic-specific
variables in a constraint, for example, such as: ?T and ?L:
?T IS_A POST
WHERE ?L = LENGTH
These names must be valid keys:
They must begin with a letter.
They can only contain alphanumeric characters.
Special characters are not allowed, except for underscore ('_').
The expression cannot be longer than 30 characters.
You can enter a query ('?') in front of the name.
Correct the variable name at the cursor. See also other possible causes
of error (messages).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 28085 - Invalid variable name &1 ?

  The SAP error message "28085 Invalid variable name &1" typically occurs in the context of SAP ABAP programming or when working with SAP Query or SAP Report Painter/Writer. This error indicates that a variable name being used in a report or query is not valid according to the naming conventions or rules defined by SAP.
  Causes:
  
  Invalid Characters: The variable name may contain invalid characters or symbols that are not allowed in SAP variable names.
  Length Restrictions: The variable name may exceed the maximum length allowed for variable names in SAP.
  Reserved Keywords: The variable name may be using a reserved keyword or a name that is already in use.
  Incorrect Syntax: There may be a syntax error in the way the variable is defined or referenced.
  Contextual Issues: The variable may not be defined in the context where it is being used, such as in a different report or query.
  
  Solutions:
  
  Check Naming Conventions: Ensure that the variable name adheres to SAP's naming conventions. Variable names should typically start with a letter and can include letters, numbers, and underscores.
  Review Length: Make sure the variable name does not exceed the maximum length (usually 30 characters).
  Avoid Reserved Words: Check if the variable name is a reserved keyword in SAP and change it if necessary.
  Correct Syntax: Review the syntax of the variable definition and usage to ensure it is correct.
  Define the Variable: If the variable is not defined, make sure to define it properly in the relevant context (e.g., in the report or query).
  Debugging: If you are working in ABAP, use debugging tools to trace where the error occurs and inspect the variable names being used.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for guidelines on naming conventions and variable definitions.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE38 (ABAP Editor) or SQ01 (SAP Query) to troubleshoot and modify your reports or queries.
  
  If the issue persists after checking these aspects, consider reaching out to your SAP support team or consulting with an experienced ABAP developer for further assistance.