Introduction

This specification document covers the interface specifications that must be supported by any third party (Issuer or Acquirer) to integrate with NCS. It contains definitions for all messages and the data elements (or fields) transmitted between the NCS and a third party application

Acronyms and Abbreviations

NCS	Nigeria Central Switch
ATM	Automated Teller Machine.
POS	Point of Sale Machine
Acquirer	The institution, which accepts the card for performing the transaction.
Issuer	The institution which has issued the card and to which the account belongs.
CMS	Card Management System (Credit Card)