Which two actions can lead to conflicts during a reconcile operation in ArcGIS?

During a reconcile operation in ArcGIS, conflicts arise when different versions of the same data are manipulated in ways that cannot be automatically synchronized. One of the primary sources of conflict occurs when two separate versions make changes to the same feature. In particular, the action of changing the same feature in two separate versions can result in conflicts because each version has its own set of edits that need to be reconciled. Since both versions contain different modifications to the same base feature, the system cannot simply merge these changes without human intervention to resolve the differences.

Choosing to delete a feature in a child version that does not exist in the parent version does not, in itself, create a conflict because the parent version remains unchanged. Any reconciliation process will recognize that while the child version has deleted the feature, the parent version still contains it and can facilitate the merge without conflict.

Understanding the dynamics of version management in ArcGIS is crucial, as it allows users to foresee potential conflicts and manage their GIS data effectively during editing and reconciliation.