Why am I receiving this error when trying to list an item on Half.com?<Errors>
<ShortMessage>You did not signup to sell items on Half.com.</ShortMessage>
<LongMessage>You did not signup on Half.com to sell items.</LongMessage>
<ErrorCode>21683</ErrorCode>
<SeverityCode>Error</SeverityCode>
<ErrorClassification>RequestError</ErrorClassification>
</Errors>
Answer
Summary
You will receive this error if you are attempting to list an item on Half.com via the AddItem API, but are not a registered Half.com seller.