SendRoutingInfoForGprsArg  Message

This service is used between the gateway MSC and the HLR to retrieve the routing information needed for routing the short message to the servicing MSC or MME but not both, or SGSN, or (for T4-device triggering via the IMS) IP-SM-GW. This service is also used between the gateway MSC and SMS Router, and SMS Router and HLR in order to enforce routing of the SM delivery via the HPLMN of the receiving MS. This service is also used between HLR and IP-SM-GW, and between IP-SM-GW and HLR in order to allow MT-SM delivery (other than T4-device triggering) via the IMS. This service is also used with an IWF interfacing the S6c interface. The MAP-SEND-ROUTING-INFO-FOR-SM is a confirmed service

Reference: TS 29.002-f30