Parties and recitals
The dealStandardWho is making the agreement: each side's name, address and tax details. These have to be exact for the documents to be accurate.
Names both parties with their address, state, email and tax details (GSTIN, or "Not registered under GST"; and the freelancer's MSME status), and records that The Goodwill Network created the document but is not a party to it. The recitals that follow are the short background to the deal: why the client is hiring, that the freelancer has the skills, and that The Goodwill Network is not a party. They explain the agreement; they are not obligations themselves.
These details say exactly who is bound by the agreement, so they have to be correct: each side promises in Clause 11 that its own details are accurate, and tells the other if they change. The invoices are then built from the same details, so a mistake here carries into every document.