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ArcMap v10.3 - Adding relationshipClass into a map from ArcCatalog

Question asked by DemersM on Mar 7, 2019



I am wondering why it's possible to add a relationshipClass from the catalog into a map in ArcMap 10.3 only when the cardinality is M-N (many-to-many). When I try to drag and drop other relationshipClass with cardinality (1-1 or 1-M) I have the following error:


Could not add the specified data object to the map.


Thanks for the info,