According to the error, in your binding file, the ApprovedRequestsDb receive location is configured to use a host (receive handler) called ReceiveHost, which is untrusted, which BizTalk cannot find.
Double-check the spelling of the host on the local BizTalk server into which you are importing the binding file. Also make sure that it is untrusted.
Finally, the host must be configured as a handler for the adapter used by your receive location. So if your receive location should use the WCF-SQL adapter, then go to the adapter configuration in the BizTalk Administration Console and ensure that the ReceiveHost is configured as a receive handler for that adapter.