Quoting beamends <..hidden..>:
I've just tried this, assuming "apply" means run the SQl using phpgadmin. I've changed the old VAT(17.5) 2200 on the chart, set the valid date to 30th Nov and created a new tax 2201 VAT(15). When I go to save the Tax page I get : DBD::Pg::st execute failed: ERROR: invalid input syntax for integer: "" Error! INSERT INTO tax (chart_id, rate, taxnumber, validto, pass, taxmodule_id) VALUES (?, ?, ?, ?, ?, ?) ERROR: invalid input syntax for integer: ""
I got this too. I think that you just need to make sure that there is a number in the "Number" and "Ordering" fields, for each row. I put 0 in the former (I'm not sure what it's used for, but originally it had nothing in it, and setting it to 0 hasn't made any obvious difference), and 1 in the latter.
Hth, Another Richard