HMR - Require header

Hello,

I'd need to remove 'Require' header from INVITEs. I created a very simple rule that works fine (test-sip-manipulation is ok). The HMR was applied to the SA as an inbound rule.

But it seems the call is dropped (Bad Extension due to missing feature in Require) before the rule is executed, because I cannot find the info about execution in the debug log.

I came across a following info the HMR BCP:

　

Inbound HMR rules are applied before most processing done by the Net-Net SD, but after some SIP parser processing is performed. The message's source is determined to decide which session agent, realm, or SIP interface it belongs to.