hi i am using fedex api i have created the my account on fedex. my problem is that when i am using test account number and test meter number i am getting the results properly but when i am using client account detail i always get the error invalid header(invalid header). when i have contact with the fedex team they said me to use different url ( before asking with suport team i am using this url https://gatewaybeta.fedex.com/GatewayDC now they have asked me to use this url gateway.fedex.com:443/gatewayDC ) but still the same response

Kimse bu konuda herhangi bir fikrim yok ya da fedex shiiping ücreti ile ilgili herhangi API olabilir. Ben bu API ile sadece nakliye oranını bulmak zorunda