What does TXN mean in TXN 1st April 1990 on the first page of a post production script?

In the context of a post-production script, "TXN" typically stands for "transaction." The date "1st April 1990" likely indicates the date of that specific transaction or the completion of a particular phase in the production process. It may refer to the date when the script was finalized, submitted, or when a specific production-related action took place.