Sometimes if you work with the Fabric Composer online playground and you create an item from a transaction you get the error message that the given id already exist even if it is not directly visible in the asset list. This is actually a "feature" of the online playground, it happens if the old item with the old id already existed but it was deleted. For some reasons it is sometimes cached somewhere that can not be explicitly deleted. What you can do in such situations that you redeploy the business network archive file:
- Make sure that the latest version of the .bna (business network archive) is downloaded.
- Delete the existing business network in the online playground.
- Rdeploy the business network from the downloaded .bna file.