Routing and/or Verification Mechanisms (RVMs)

Should the RVM (on behalf of the requesting or responding PSP) validate the timestamp? In cases when the maximum execution time is exceeded, the RVM could/should cut the connection and return an error to the requesting PSP?

From a practical point of view, the counter starts when the VOP request is initiated by the requester and materialized via the VOP request Timestamp (attribute AT-T056).  It is then up to each scheme participant to agree wi