Invoice cannot be validated due to Dist Variance hold-Distribution sum does not equal the line amoun

Invoice cannot be validated due to Dist Variance hold-Distribution sum does not equal the line amount for a line.

When we are trying to validate the invoice we are getting into Dist Variance hold..

We have to item lines one is  with '0' and one with '20000'...

We  have reversed one item line but tax lines are not reversed.

We are getting the difference because of the tax lines.

Please let us know how to move ahead with this issue.

Thanks,

K