Error when manually registering and searching for Purchase Confirmation status on Utradehub

Hello. I issued and submitted a Purchase Confirmation, and subsequently received a revised zero-rated tax invoice from the supplier. Now, I am trying to manually register the purchase status of the Purchase Confirmation, but it cannot be searched through the Utradehub Integrated Purchase Confirmation Information Service. Could you let me know why this is happening? To provide more details: I received a standard tax invoice from the supplier in April 2025, and in July 2025, I issued a Purchase Confirmation via Utradehub, submitted it to the supplier, and then received a revised zero-rated tax invoice. For your reference, this entire process took place before the export.