An agreement that contains certain representations that must be made to
[[DTC]] by the [[Issuer]] and others before various issue types (for example,
[[Book-entry]]-only issues, [[Rule 144A]] issues, and [[Regulation S]] issues) can be
made eligible for DTC's services.
https://www.dtcc.com/-/media/Files/Downloads/legal/service-guides/Underwriting-Service-Guide.pdf