Didn't make a difference. Tried with one and three colons.
/etc/exports:
/opt/NetApp/xFiles/xcp/catalog utility-mgmt-004(rw)
[root@utility-mgmt-004 xcp]# /opt/fdsys/xcp/xcp/linux/xcp scan -newid mgmt1-scan acffdsyssquibxnas-proddev-lif10:/vol/qa_mgmt
XCP 1.9.1; (c) 2023 NetApp, Inc.; Licensed to Sean Beverley [US Government Publishing Office] until Tue May 30 11:14:40 2023
xcp: ERROR: Catalog inaccessible: Cannot mount dr:::/opt/NetApp/xFiles/xcp/catalog
Failed with 'socket connect to 'dr tcp 111 b'pmap2' c0': [Errno -2] Name or service not known'
xcp: HINT: Verify the settings in the host config file /opt/NetApp/xFiles/xcp.
Job ID : Job_2023-03-14_14.52.25.705106_scan
Log Path : /opt/NetApp/xFiles/xcp/xcplogs/Job_2023-03-14_14.52.25.705106_scan.log
STATUS : FAILED