How To Fix 00028 - With bit strings, only '0' and '1' are allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 028

• Message text: With bit strings, only '0' and '1' are allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 00028 - With bit strings, only '0' and '1' are allowed ?

  The SAP error message "00028: With bit strings, only '0' and '1' are allowed" typically occurs when you are trying to use a bit string in a context where only binary values (0 or 1) are expected, but the input contains invalid characters or values.
  Cause:
  
  Invalid Input: The input string contains characters other than '0' or '1'. For example, if you have a string like "102" or "abc", it will trigger this error.
  Data Type Mismatch: The program or function module expects a bit string but receives a different data type or format.
  Incorrect Configuration: In some cases, the configuration of the system or the data model may not align with the expected input format.
  
  Solution:
  
  Check Input Values: Ensure that the input string consists only of '0's and '1's. Validate the data before processing it.
  Data Type Verification: Make sure that the variable or field you are using is defined as a bit string in the ABAP code. If it is not, you may need to convert or cast it appropriately.
  Debugging: If you are unsure where the invalid input is coming from, use debugging tools to trace the values being passed to the function or method that is generating the error.
  Error Handling: Implement error handling to catch invalid inputs and provide meaningful feedback to the user or log the error for further analysis.
  
  Related Information:
  
  ABAP Data Types: Familiarize yourself with ABAP data types, especially how bit strings are defined and used.
  Function Modules: If you are using specific function modules or methods, check their documentation to understand the expected input formats.
  SAP Notes: Search for relevant SAP Notes or documentation that may provide additional context or solutions for this error message.
  
  By ensuring that only valid binary values are used and that the data types are correctly defined, you can resolve the error and prevent it from occurring in the future.