Usage of 'the' is a big topic and depends on context.. for your purposes: the first time you mention 'verification job' in a document, you might use 'a' - for example, the title could be "How to Set Up a Verification Job.' Using 'a' suggests that you're introducing a topic, perhaps something the reader wasn't aware of. In the instructions, you could use 'the,' because that shows that you (and the reader) have a specific verification job in mind. As a general (but not exhaustive) rule: use 'the' when you've already mentioned something, or when it's clear the reader or listener knows what you have in mind. A basic example: -I read a good book last week - it's about... [it's the first time you mention it, your friend doesn't know which book you mean yet] -- -Here's the book I was telling you about. [now your friend knows which book you're talking about, so use 'the']

In general, yes, you should use an article there, if you are writing sentences. You can drop the article if you are abbreviating it, so (for example) you might drop the 'the' or 'a' in a bullet point list, or possibly in the brief title of a section of text. If you're not sure - use it. curt has explained the difference between 'a' and 'the' well. In your case, whether to use 'a' or 'the' depends on how much your 'job' changes - e.g. if you could have two jobs running at the same time, or if they change each time, then you should use 'a' when you introduce the concept in your documentation. I'm not so sure your 'create' and 'setup' nouns are quite right. Normally giving names and properties is part of setup, and setup and creation are quite similar. e.g. I would use 'create' to describe a 'new' call in an object oriented language. Without knowing more about the process, I could not be sure.