You want to register the domain name ABCcompany. org, but the registration service is not allowing you to do that. What's the most likely reason for this

The domain of a website is the name of the website. The most likely reason why the domain cannot be registered is that, it has already been registered/taken by someone else.

There are several reasons why a domain cannot be registered.

The most important reason is that:

When a domain is taken, no other person can have access to that domain until its expiry (and not renewed). So, when a domain has been taken, you will not be able to register such domain.

Another reason is that:

Insufficient funds is another reason, if the domain is not a free domain.

Read more about website domain at:

link

Options :

The domain name is registered to someone else.

Domain names must end in ".com".

You are not the legal owner of ABC Company.

Domain names must be all in lowercase.

The domain name is registered to someone else.

Explanation: In the scenario above, ABCcompany.org represents the domain name of a particular person or establishment which provides access to the website of the owner. The domain name given to an individual or website must be distinct, that is no two different organizations or persons can use exactly the same domain name. Domain names can end with :. com, org, ng and various other and they aren't case sensitive. Therefore, the inability to register the domain name abive will likely stem from the fact that the domain name has is already registered to someone else.