Paid work means
work for an employer in return for wages, salary or some other measurable reward. The payment may be made in payment or in kind
(if the person is a self-employed earner) work carried out for reward or profit (other than as an employed earner).
Payment discrepancy
Payment discrepancies can occur for a customer or an employer and will be for one of the following reasons
there’s an accounting event recorded on the Payments Made Framework (PMF) that hasn’t a matching posting on the tax credits computer
there’s a posting on the tax credits computer without a matching event on PMF