You're going to ask another lender with an existing lien to fall behind your new lien. I guess my small community banking ways say, "not only no, but..." unless this business is dying and my loan is at risk and only your new funds will save my loan regardless of my collateral. I guess I was lucky enough to not have that happen.
I would assume this would all be worked out in advance and the paperwork would be a formality of an agreed upon action. In that case, "here is the subordination we discussed, please execute..." or perhaps you can be more specific as to the intent or conditions.
My opinions are not necessarily my employers.
Rules and Regs minus Relationships equals Resentment and Rebellion. John Maxwell