The local Cloudsoc Gatelet policies provide the ability to insert a custom HTTP header. The header contents size has a limit.
Protect App is configured with an Access Enforcement Policy (AEP) , and the response action used is "Header Insertion"
The hard size limit of the "Header Insertion" action in Access Enforcement Policy is 8K (8,192B).
The Policy UI permits the user to insert contents up to 8K Bytes limit, and it rejects and truncates the rest.