| http://www.w3.org/ns/prov#value | - Typically, the relevant service will send a request fail message back to the originator of the transaction message to indicate that the service request has failed. [0166] If the hash digests are the same then the request is actioned by the service, for example a call may be made to a legacy payment service to instruct payment, with appropriate data being passed to an interface or gateway to the le
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