Where is the header of a GENSER message located?

The header of a GENSER message is located at the top of the message. This is designed to provide essential information about the content and the transmission details right away, allowing recipients to quickly understand key aspects such as the origin, classification, and purpose of the message. Positioning the header at the top ensures that it is immediately visible and accessible, which is crucial for effective communication in a time-sensitive or operational context.

A common structure for such messaging emphasizes the importance of having critical and often perishable information presented first, which enhances clarity and comprehension. Having the header at the top helps ensure that it is not missed, making it more effective for its intended purpose.