S_J_0909

Hi all, My organization is considering responding to a solicitation for a GSA MAS BPA, but I cannot seem to find clarity around SIN-related requirements. Namely, this BPA includes SIN 54151S for IT Professional Services, but it also lists Ancillary Services and OLM under that same SIN. My question is, if we have SIN 54151S under our current schedule already, do we also have to have Ancillary Services covered in our GSA Schedule to be eligible to submit a response, or does being a provider of IT Professional Services under that SIN suffice? Please let me know if I am missing any pertinent information in my question. This is relatively new to me. Thank you!