So, I'm working on this conlang as part of my work and the deliverable is a simple grammar. To facilitate reference, I've divided up the suffixes between inflectional and derivational forms. But of course inflection and derivation are not really binary categories. There are some which are fuzzy. How would you categorize this one, which is used on nouns in 'have' constructions.
four dog-pl-have be-1sg 'I have four dogs.'
cat-have be-1sg-neg 'I don't have a cat.'
This contrasts with the genitive: dog-pl-1poss I-gen 'My dogs'. Based on the languages with which you are familiar, this more inflectional or derivational?