Employee Supplier Bank Update for expense reimbursement in line with PII's

Due to PII rules, there is need to allow Employees to update their own banking information on vendor record for expense report reimbursement. How can this be handled?

Oracle supplier form can not be made available to all employees unless it can be restricted to individuals record. Associate should be able to access only his own supplier record for bank information update.

Banking Information needed will vary based on country specific rules.