How To Fix TT015 - The Occurs parameter in a loop must be at least 1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 015

• Message text: The Occurs parameter in a loop must be at least 1

What causes this issue?

You have not specified a value or have specified one that is less
than or equal to zero for the number of loop passes.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Enter a value between 1 and 999.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TT015 - The Occurs parameter in a loop must be at least 1 ?

  The SAP error message TT015, "The Occurs parameter in a loop must be at least 1," typically occurs in ABAP programming when you are defining an internal table with a loop statement, and the OCCURS parameter is set to a value less than 1. This error is related to the definition of internal tables in older versions of ABAP, particularly when using the TABLES keyword.
  Cause:
  
  Incorrect OCCURS Value: The OCCURS parameter specifies the initial size of the internal table. If it is set to 0 or a negative number, the system will raise this error.
  Legacy Code: This error is more common in legacy ABAP code that uses the older syntax for defining internal tables, which is less common in modern ABAP programming.
  
  Solution:
  
  
  Check the OCCURS Parameter: Ensure that the OCCURS parameter in your internal table definition is set to at least 1. For example:
  DATA: BEGIN OF itab OCCURS 10,
          field1 TYPE c LENGTH 10,
          field2 TYPE i,
        END OF itab.
  In this example, OCCURS 10 is valid.
  
  
  Use Modern Syntax: If you are working with newer versions of ABAP, consider using the modern syntax for defining internal tables, which does not require the OCCURS parameter. For example:
  DATA: itab TYPE TABLE OF your_structure.
  This approach is more flexible and eliminates the need for specifying the OCCURS parameter.
  
  
  Review Loop Statements: If you are using a loop statement, ensure that it is correctly referencing the internal table and that the table is properly defined.
  
  
  Related Information:
  
  Internal Tables: In ABAP, internal tables are used to store data in a structured way. They can be defined using various methods, and the modern approach is preferred for better readability and maintainability.
  ABAP Syntax: Familiarize yourself with the latest ABAP syntax and best practices, as SAP has been moving towards more modern programming paradigms.
  Debugging: If you encounter this error, use the ABAP debugger to trace the code execution and identify where the internal table is being defined and used.
  
  By following these guidelines, you should be able to resolve the TT015 error and improve your ABAP code.