A document, such as a bill of lading, that has been created on the platform can still be deleted or changed. But once an envelope with this document has been transferred away from the Issuer and it has been transferred into someone else's possession, it cannot be changed by anyone.
If parties later discover an error in the document, the procedure on how to amend it is as follows (this does not apply for ACI envelopes):
Return the document
The document must be transferred (returned) to the issuer, ideally along with an additional document or note requesting the change. More information on how to return a document can be found here.
Destroy the document
Once the document is in the issuer's possession, they can (based on the information) destroy this document. More information on how to destroy a document can be found here.
Issue a new (corrected) document
If you want to issue a new document with the old (same) document number it is compulsory that the issuer destroy the existing (old) document prior to issuing a new one because blockchain is immutable and documents already tracked on the blockchain are unchangeable. The use of the same document number is allowed by the CargoX Platform – but please check with your operations on how to proceed about that.