How To Fix 00103 - Int. table & without header line not supported with LOOP AT itab

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 103

• Message text: Int. table & without header line not supported with LOOP AT itab

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 00103 - Int. table & without header line not supported with LOOP AT itab ?

  The SAP error message "00103 Int. table & without header line not supported with LOOP AT itab" typically occurs when you attempt to use the LOOP AT statement on an internal table that does not have a header line defined. In ABAP, internal tables can be defined with or without a header line, and the use of header lines has been deprecated in favor of using table expressions.
  Cause:
  The error arises because the LOOP AT statement is being used on an internal table that is defined without a header line. In modern ABAP programming, it is recommended to use internal tables without header lines and to utilize table expressions instead.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Define the Internal Table Correctly: Ensure that your internal table is defined without a header line. For example:
  DATA: itab TYPE TABLE OF your_structure.
  
  
  Use LOOP AT with Proper Syntax: When looping through the internal table, use the following syntax:
  LOOP AT itab INTO DATA(line).
      " Process each line
  ENDLOOP.
  
  
  Avoid Header Lines: If you are using header lines, consider refactoring your code to eliminate them. Instead of using a header line, you can directly work with the loop variable as shown above.
  
  
  Example:
  Here’s a simple example demonstrating the correct usage:
  DATA: itab TYPE TABLE OF your_structure,
        line TYPE your_structure.
  
  " Fill the internal table
  SELECT * FROM your_table INTO TABLE itab.
  
  " Loop through the internal table
  LOOP AT itab INTO line.
      " Process each line
  ENDLOOP.
  Related Information:
  
  Header Lines: Header lines were commonly used in older ABAP programs but are now considered outdated. The modern approach is to use inline declarations and avoid header lines for better readability and maintainability.
  Table Expressions: ABAP 7.4 and later versions support table expressions, which allow for more concise and efficient code. For example, you can use LOOP AT itab INTO DATA(line) directly without needing to declare a separate variable beforehand.
  Performance: Avoiding header lines can improve performance and reduce complexity in your code.
  
  By following these guidelines, you should be able to resolve the error and write more modern and efficient ABAP code.