Hi @Clodoaldo P
No, two images/tags/regions in different projects of the same resource group can't share the same IDs. You can use the combination of project ID, image ID, and tag ID to uniquely identify images and their associated tags within a resource group. However, you need to ensure that you include the project ID in your database schema to distinguish between projects within the same resource group.
If this answer helps kindly accept it thanks very much.