How TD reserve SP financial interests against Project owner who/that avoids payments?

 if there is a deposit that is required by the SP's proposal, once the proposal has been accepted by the project owner, that deposit amount will be transferred from the project owner's Wallet to SP's Wallet uautomatically

Once the SP's project proposal has been accepted by the project owner, TD deducts the first payment phase from the e-wallet of the project owner and holds it in its own e-wallet. Once the phase of the project is marked as done and approved by project owner and the TD admins, the payment amount of the phase will be released from TD's Wallet to the SP's wallet.