The University of Edinburgh has admitted some firms have stopped supplying them because of problems with a new finance system.
Payments to students, staff and suppliers were delayed by the rollout of a new financial system.
The university has now ordered an external review of the shakeup and has repeated apologies to those affected.
Payments to suppliers overseas have also been delayed, the university has admitted.
The new People and Money (P&M) system is a centralised HR, payroll and finance system which the university first introduced in 2020 and completed its rollout this year.
Problems in this final phase of the project mean thousands of invoices issued to the university are still outstanding, and payments to staff and students have been delayed.
