Question:

Why a user cannot delete a specific document version in Vault PromoMats and Medical?

Answer:

There are many restrictions why a user cannot delete a specific document version: 

• The specific version is the only version of the document in Vault
• The specific version is part of a reference
• The specific version is in an active workflow
• User's role on the document does not have the Delete permission
• The specific version has incoming document links
• The specific version is in a document relationship

Related Documentation:

Vault Help Documentation: Deleting Specific Versions