Lock Box Code Share with a 3rd party vendor

[Kevin Kim]

Hello

 I am in new for this journey. My PM company has own contractor but the price seems to be higher so I have a contacted local contractor. My rental property PM shared the code with a 3rd party local vendor that I am going to hire.I thought someone from my PM company will open door for the contractor but they simply shared the code. Is it common practice? I am still learning and appreciate if someone can advice.