Calls getting failed by the supplier due to update message goes From SBC

Dear Team,

 

Calls getting failed by the supplier when update message goes SBC-Need Manipulation for removing Update Message.

 

Call Flow:

 

Incoming Carrier --> SBC(4250) ---> Outgoing Carrier

 

Incoming carrier send Update message before answer. So, the outgoing carrier rejected the call with 500.

Is there any option at SBC to strip Update message or any manipulation rule will work removing the update message.

 

Please update.