What does it mean when i get password mismatched

password are for security and privacy reasons..
missmatched password while pairing bluetooth devices means you have entered incorrect pass code.
usually the the device A you are searching with asked you to create a pass code when you are pairing device B. When connection is establishing, device B will ask you for the pass code you just created for pairing device A with device B. this pass code is different for each and everytime you connect to a device.