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Hi.I successfully implemented a Silent Post callback url that checks the md5 signiture this way:For Silent Post, these values are used for creating the MD5 Hash, in this exact order:The MD5 Hash Value, which is assigned by the merchant in the account...

Sometimes when create a new Payment Profile and right after that call subscribe with profile api I got E00040 error. After resubmitting the request later it works...This seems like a bug in authorize.I'm using sandbox account with the php library.