Sensitive Data sanitization for the test environment

Current Practice is:

I prepare clone of EBS production environment to perform UAT and destroy the test environment.

For example: I need to perform UAT for new payroll element, other relevant elements and balances requested by the payroll manager.

My Information Security Policy says that sensitive data should be sanitize to perform UAT in test environment.

For payroll manager there is no need to sanitize payroll data but for developer how is going to register new element and perform self test from different aspects, payroll data must be sanitize so that sensitive information become irrelevant to developer

How can I perform data sanitization to fulfill IS policy requirement.