How to add X-Headers from REFER to INVITE

Hi Team,

I hope you are all well,

We have AP 4900 V9.3 , Here is the flow of the call
Carrier »» Oracle SBC »» Avaya SM/IVR »»» Oracle SBC »» Google GTP »»____REFER_to Avaya ___»» Oracle SBC »»—INVITE——»» Avaya SM/IVR

There is X-Headers comes from Google GTP Refer I want to add it to the invite that goes to Avaya/IVR,

for example

x-session-ucid: 11111111111111111111
x-ivr_dfcx: {"aepSessionId":"AAAAAA", "ivr2dfcx":{"accountNumber13":"1234567", "siteId":"111", "intentFromAvaya":"billing", "language":"1", "icomsId":"111", "ani":"1111111", "identifiedPhoneNumber":"22222222", "accountNumber9":"44444444", "lob":"2"}, "ucid":"11111111111111111111"}

How can I do that

Thank you for your advice.