USPS Not Tracking Shipment: “Label Created, Not Yet in System”

Hi everyone!

I have a pending return, the shipping label details show the carrier is USPS, and the package tracking status shows the package shipped on October 24th. Today, November 5th, I searched for the tracking number on the USPS official website, but it is still saying “label created, not yet in system.” Beneath that, it says, “A status update is not yet available on your package. It will be available when the shipper provides an update or the package is delivered to USPS. Check back soon.”

In addition, our warehouse has not received the relevant return package. I would like to ask if anyone here has experience with this? What can I do to resolve this issue?

Thank you!