How To Fix AQ226 - Check headers

AQ226 - Overview

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 226

• Message text: Check headers

What causes this issue?

In a previous step, you defined your own headers for this statistic or
ranked list. Now, you have changed one of the reference units for a
currency amount field or a quantity field.
With standard headers, the reference unit is always displayed on the
second line of the column header with currency amount fields and
quantity fields. If you change the reference unit, the standard headers
are automatically adjusted, i.e. the modified reference unit is entered
in the header.
Since you have defined your own headers, this adjustment is not
possible.

System Response

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

How to fix this error?

Please check your own headers. If the reference units appear in the
headers, they must be changed in line with the modifications. When you
compare your own headers with the standard headers, you can see where
the query would insert the reference units.
If you want to display the reference units in the query list, you must
include these reference units in the headers.

Error message extract from SAP system. Copyright SAP SE.

AQ226 - Details

• The SAP error message AQ226 "Check headers" typically occurs in the context of the SAP Advanced Business Application Programming (ABAP) or when dealing with IDocs (Intermediate Documents) and other data transfer processes. This error indicates that there is an issue with the headers of the data being processed, which could be due to various reasons.
  Causes:
  
  Missing or Incorrect Header Information: The header information required for processing the data might be missing or incorrectly formatted.
  Data Format Issues: The data being sent or received may not conform to the expected format, leading to header validation failures.
  
  Configuration Issues: There may be configuration problems in the system that affect how headers are processed.
  Version Mismatch: If there are different versions of the data structure being used, it can lead to header discrepancies.
  Network Issues: Sometimes, network issues can cause data corruption, leading to header errors.
  
  Solutions:
  
  Check Header Information: Review the header information in the data being processed. Ensure