Winning corporate business means conceding something. A fee waived, a rate cut, a bespoke schedule for a client whose treasury business you wanted. Each concession is a deliberate commercial decision, made by someone who understood the trade at the time.
The problem is what happens next. The terms are signed, and then they land on a billing system that has no concept of a negotiated agreement. So they become manual adjustments applied each cycle, a spreadsheet somebody maintains, and knowledge that lives in one relationship manager’s head.
Over a few years this compounds quietly. Concessions granted to win a mandate outlive the reason for them. Volume commitments that justified a discount are never checked. Clients get billed incorrectly and notice, which costs you credibility at exactly the moment you are asking for more of their business. And when finance asks which of your corporate relationships are actually profitable, the honest answer is that it would take weeks to find out.
None of this is a discipline problem. Your people are not careless. They are working around a system that was never built to hold a negotiated agreement in the first place.