The value of tmnxAncpStrInfSapEncapValue indicates, together with the
object tmnxAncpStrInfSapPortId the SAP id to which the ANCP-string
defined in tmnxAncpStrInfAncpString is associated.
The value of this object is only meaningful when the value of the
object tmnxAncpStrInfAssociation is set to sap(2).