Determining the Commit Node and gtrid with sp_transactions

Using sp_transactions with the xid keyword displays the commit node, parent node, and gtrid of a particular transaction, and all active transactions.

However, sp_transactions ... xid requires that you specify a particular transaction name.

For example:
sp_transactions "xid", "00000b1700040000dd6821390001-aa01f04ebb9a-00000b1700040000dd6821390001-aa01f04ebb9a-caserv1-caserv1-0002"
xactkey                        type        coordinator starttime
 state             connection dbid   spid   loid
 failover                   srvname                        namelen
 xactname
 commit_node parent_node
 gtrid
 ------------------------------ ----------- ----------- 
 --------------------
 ----------------- ---------- ------ ------ -----------
 -------------------------- ------------------------------ -------
 -----------------------------------------------------------------
 -------------
 -------------
 -------------
 0x00000b2500080000dd6821960001 External    ASTC        Jun 1 1999 3:47PM
 Begun             Attached        1      8         139
 Resident Tx                NULL                               108
 
 00000b1700040000dd6821390001-aa01f04ebb9a-00000b1700040000dd6821390001-aa01f04ebb9a-caserv1-caserv1-0002
 
 caserv1 caserv1
 00000b1700040000dd6821390001-aa01f04ebb9a