Void shipping label

[ga_71664]

I accidentally purchased 2 shipping labels but when I try to void it says technical difficulties 

[disneyshopper]

Seller Hub > Orders > Shipping labels

Locate the label.  Click the down-arrow, select VOID.  The USPS will credit your account in 2-3 weeks after they have confirmed the label was never used.  You have 5 days to void the label, so the error might be a temporary glitch, so try again.