How To Fix AD266 - Length of header was increased from & to &

AD266 - Overview

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 266

• Message text: Length of header was increased from & to &

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AD266 - Length of header was increased from & to & ?

  The SAP error message AD266, which states "Length of header was increased from & to &," typically occurs in the context of SAP's Application Development (AD) when there is a mismatch in the expected length of a header in a data structure or a communication protocol. This error can arise in various scenarios, such as when working with IDocs, BAPIs, or other data transfer mechanisms.
  
  Cause:
  
  
  Data Structure Changes: The most common cause of this error is a change in the data structure definition, such as an increase in the length of a field in a header. This can happen if a developer modifies the structure of a table or a data type that is used in the communication.
  
  
  Inconsistent Versions: If different systems (e.g., development, testing, production) are using different versions of a data structure, it can lead to this error. For example, if the sender system has a different definition of