Error Code	Error Description	Warning Message
1001 | Missing or invalid element: MailpieceShape. Error encountered.	This error occurs when the package type is not valid for the selected shipping method. You can see the solution below.
1053 | Total package weight must be equal to or greater than the sum of the item weights. Error encountered	Please enter a valid weight for the packages.
3021 | Unable to validate Ship To address. Dial-A-Zip error: Address is too ambiguous. Error encountered	There is a problem with the military address. In order to fix the address, please click the link.

1) 1001 | Missing or invalid element: MailpieceShape. Error encountered.

• This error occurs when the package type is not valid for the selected shipping method.
• For example, you can't get a label with FirstClass - Letter combination. You have to select Priority Mail Express - Letter to get a label.
  You can see the combinations from the link.

2) 1053 | Total package weight must be equal to or greater than the sum of the item weights. Error encountered

• Please enter a valuable weight for the packages.

3) 3021 | Unable to validate Ship To address. Dial-A-Zip error: Address is too ambiguous. Error encountered

There is a problem with the military address. 

• In order to fix the address, please click the link.

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