Question - How do I fix Error 2340? The Post Code looks fine.
Answer - This could be because the Post Code is in the wrong format. Sometimes this isn't immediately obvious when looking at the post code until you go into edit it. The error can be caused by a full stop or a space where there shouldn't be one i.e at the start or end of the post code. Once edited correctly and saved, the error will go once you have recalculated.
Please note you may not see the extra spaces from looking at it, click into the post code field and check whether the cursor has a little gap after the last digit.