We are using CA Service Desk 14.1.
You may want to check a similar code which you can make use in regards to your requirement
<PDM_IF "$args.resolution_code" == "<id>">
<PDM_MACRO name=dtlTextbox hdr="External System Ticket" attr=external_system_ticket keeptags=yes make_required="yes">
<PDM_MACRO name=dtlTextbox hdr="External System Ticket" attr=external_system_ticket keeptags=yes>
If not then you may want to write a spel code. Below s a sample I noted on other communities
Hope this helps you to get going.
Unfortunately this would require some custom code because currently we do not have an "if this, then that" engine that you can apply to a dependency like this. Some objects like statuses have status transitions which you can add a condition to, but unfortunately for these two fields, there are no triggers. There maybe someone out here who has gotten something like this to work and may be willing to share their info with you.
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