We use Open Lab shared Server in our HPLC, UPLC and GC equipment. It is configured to meet CFR 21 part 11 and all data integrity requirements for the USA and Europe. However, today in an in-place audit the auditor detect that in the supervisor role, in the control panel appear a Delete button. We know that this button is used to remove instruments in the software and we know that it must be blocked for the supervisor, however, know we need to demonstrate to the auditor that delete the instrument do not affect the data generated by this instrument. Please, can you let me know where I can find this information?