Why is there a password asked in factory reset

[Android Central Question]

My phone said encryption unsuccessful. So I went to the factory reset ,and then wipe options.Thus in wipe options ,there was only one option decrypt storage. It said please install from decrypt before update.After that they asked password when I when to decrypt storage option.I don't know which password they are asking.My phone is oppo A1601

 

[mustang7757]

Did you set up different password from lock screen and factory reset option?

I'll leave a Link to register so you can communicate here as a guest account you can only post questions but can't reply.
https://forums.androidcentral.com/showthread.php?t=409154

 

[B. Diddy]

Welcome to Android Central! Who encrypted the phone? Has this always been your phone, or did you get it from someone else?