As per available documentation the related list button should be built as 'Declarative action -> related list actions' with type as UXF Client Action and UX Add on event mapping with source element id 'record page tabs 1' and parent macroponent 'Record'. Following same approach, a custom button has been built for an m2m table, however it doesn't work.
I have tested in pdi mimicking exact table structure and scope setup, it does work in pdi though. fairly confusing as to why it doesn't work in customer instance.
I am unable to find a way to open this button in UI Builder, how to open a component in pre-existing default pages? Navigating to default record page under tabs doesn't show up anything for declarative actions.
I want to read its code of event handling as its either a load error or event catch error, but how to find it?
**In my PDI, for CSM FSM configurable Workspace, I have observed in dev tools on chrome, the 'sys_declarative_action_payload_definition' action_key acts as a event listener and loads as below (3 rows)
However in Client Instance, the same Event Listener loads with only bottom 1 row.
**So far unable to figure out why and how this gets generated and not sure how to open this custom button in UI builder. Need guidance on how to open component in UI builder created for OOB default related list.
**Also Using ServiceNow 'Next Experience Developer tools' in PDI, I have observed that the declarative action has 5 occurrences but only 3 in client instance.
***It feels like shooting in dark, unable to understand the end to end code and how it works specifically for related lists.
