henningw left a comment (kamailio/kamailio#4166)
Thanks for the PR. Interesting that the previous name of the PV in the docs was "imsulc" - even if the code defines it otherwise. But as the module defines also other existing functions (save, lookup..) from main registration modules, it can be not used together with them. Could you maybe fix the commit message by adding the module name as prefix? Then it can be merged.