Illustrative example
One partner has run the bookkeeping for two years. Every request for the figures is met with a new reason why they are not available - the accountant has them, the software is being changed, the year is not closed.
The duty is positive: partners are bound to render true accounts and full information, so leaving the books somewhere and saying nothing does not discharge it. The subject matter is 'all things affecting the partnership', which is wider than the accounting records and covers contracts, correspondence and opportunities. The fact that makes the excuses ineffective is that the obligation is owed to each partner and is not conditional on the year being closed or the accountant being ready.
They agree a date within thirty days for handing over bank statements, the sales ledger and the accounting file, and that both partners have direct login access to the bank and the software from then on.