How To Fix 54353 - Only one & block is allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: 54 - Messages for HR tables

• Message number: 353

• Message text: Only one & block is allowed

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 54353 - Only one & block is allowed ?

  The SAP error message "54353 Only one & block is allowed" typically occurs in the context of SAP ABAP programming, particularly when dealing with the use of certain control structures or blocks in your code. This error indicates that the system has detected more than one block of a certain type (denoted by "&") in a specific context where only one is permitted.
  Cause:
  
  Multiple Blocks: The most common cause of this error is the presence of multiple blocks of the same type in a context where only one is allowed. For example, if you are using a control structure like a loop or a conditional statement, and you inadvertently define more than one block of that type, the system will raise this error.
  Incorrect Syntax: There may be a syntax error in your code that leads to the misinterpretation of blocks.
  Improper Use of Control Structures: Using control structures incorrectly, such as nested blocks that are not allowed, can also trigger this error.
  
  Solution:
  
  Review Your Code: Carefully examine the section of your code where the error is occurring. Look for any instances where you might have defined multiple blocks of the same type.
  Consolidate Blocks: If you find multiple blocks, consider consolidating them into a single block if that is logically appropriate for your program.
  Check Syntax: Ensure that your syntax is correct. Sometimes, a small typo can lead to unexpected behavior.
  Use Debugging Tools: Utilize debugging tools in the ABAP Workbench to step through your code and identify where the error is being triggered.
  Consult Documentation: If you are unsure about the correct usage of a specific control structure, refer to the SAP documentation or ABAP programming guidelines.
  
  Related Information:
  
  ABAP Programming Guidelines: Familiarize yourself with the best practices in ABAP programming to avoid common pitfalls.
  SAP Community: Engage with the SAP Community forums where you can find discussions and solutions related to similar error messages.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message, as there may be known issues or fixes provided by SAP.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.