click and send

Hi all ,

  I am new to this Click and send thing , if i could get a quick answer it would be great.

 I am following the prompts to do it , it has come up with the items i have sold of ebay but it keeps stating the post code it wrong   Post code is not valid value 🙂 . The item is going to Victoria  ,i have checked the address and all is correct. Am i doing some thing wrong?  

 Thanks for any help in advance