There several instances of a record with the same idt in the catalog. The user thinks that CFT tried to send  several times the same file.

By default value of the parameter  RKERROR of  CFTCAT is KEEP
This means that if a tranfert failed all retries have been used, the record is kept and unchanged unlike DELETE where it is deleted immediately.
When a the user resume or Start the transfert a new record is created with the same IDT.