Trying to add an association to a standard projection (e.g. adding CustomerInfoAddress to CustomerHandling) fails with 'Entity already exists in projection,' even though that entity doesn't appear anywhere in the projection's own entity list or in the association's list of available child entities. What's going on?

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Answer

The entity is already referenced in the projection at the core/base level — what you're looking at when you try to add it as a new association is the list of customer-added configuration entities, which doesn't include entities the base projection already ships with. Check Page Designer on the relevant page (e.g. the Customer page's Address group) — you'll typically find the entity you're trying to add is already available there as part of the standard projection, which is exactly why the system says it 'already exists.'

Documentation-based answer. Confirm the product and release before applying it. This answer has not been verified in an IFS environment.

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