[srwilliams1986]

There are two main ways this can happen:

1) There isn't an API, it's incomplete, or it's otherwise unsuitable. This is more true for smaller vendors, and less true for the bigger ones.

2) The company doesn't have engineering resource to fully implement an API solution, if it does exist. In this case there's somebody doing the manual process, and they are usually the one who actually implements the automation. This is the advantage of being no code! We've seen this a few times - people have been given the job of manually fulfilling requests and they decide they want to try automating it instead.