Cause
This error occurs as the section Part A is, by default, set as closed by giving zero figures to the columns. This behavior is noticed in version 4.6 of VAT excel template published on 19th Jul 16.
Solution
Select the check box Please tick if you want to give zero figures for all columns, and then uncheck the same. By doing this the default setting is overwritten, and data can be posted to this section of annexure 18.