Workflow Field Updates cause Too Many SOQL when setup on the Subscription object.
Use Framework Triggers (Routing Rules) for field updates to resolve this issue.
Batch size of 200 causes errors during Data Load for Subscriptions.
Change the Batch size to 100 for Data Loading subscriptions to resolve this issue.
API names for custom objects cannot match the API names of existing custom objects in any of the managed packages.
When creating new custom objects, do not use the same API name of custom objects in the managed packages.