Who assesses credentials, and what an assessment is accepted for, differs by country and by the body asking for it. This explains what the process is and what it can and cannot do. Check the requirements of whoever is asking before paying for anything.
You have a degree. You move country. Nobody there knows what it is worth, and your degree cannot tell them.
A credential assessment is an organisation comparing your qualification against the local system and stating what it is equivalent to.
Whether the institution was recognised where it operated, the length and level of the programme, and sometimes the content.
Often verified with the institution directly, which is where the time goes.
Does a credential assessment let you practise a regulated profession?
People pay for an assessment expecting a door to open, and get a piece of paper describing their own degree.
Accurate, useful, and not a licence.
Immigration, university admission, and professional licensing often accept different assessing bodies and different report types.
The wrong type is a full repeat, at full price.
What does an assessment give you?
Tap an item, then a bucket
Ask the body that will receive it which assessment they accept, before you buy one.
That single question, asked first, prevents the commonest waste.
A fee, plus document courier costs, plus translations, plus waiting — often months, mostly spent on the institution replying.
The fee is the visible part.
Records lost to war, closure or upheaval are a known situation, and assessing bodies have alternative procedures for it.
Ask about them explicitly. They are rarely advertised.
It translates your qualification into local terms. It is not permission to work. Ask the receiving body which one they accept before paying, and expect the wait to be about someone else replying.