Internal Service Providers (ISP):
The link above will take you to a list, maintained by ITS_EA, of all the Internal Service Providers, contact information, and the letters assigned.
While you are completing your monthly GA reconciliation, you might notice an Employee/Vendor Comment that starts with GMSA. Transactions that begin with GMSA are transactions that originated from an Internal Service Provider (ISP).
See the Documentation section on the FAQ webpage for additional information related to ISP expenditure data.