Could you provide your examples? My examples below might not correspond to what you mean.
MSC or MSP mean mystery shop company and mystery shop provider, respectively.
Others might refer to specific providers or specific clients. Please report.any post that shows names of both providers and clients within the same post.
Merch is merchandising.
I would support a list of acronyms that is a sticky note in this or other sub-forum.
Pronoun, schmonoun. I am a female human.