GPW WATS 3.01 Market Data Protocols a part of GPW WATS documentation set.
Please check the following document to learn about the construction of Trading System

• GPW WATS 1.01 Trading System

Please check the documentation of the trading protocols supported by GPW WATS

• GPW WATS 2.01 Native Order Gateway Specification
• GPW WATS 2.02 FIX Order Gateway Specification

Please check the description of the communication with Data Distribution Service

• GPW WATS 3.01 Market Data Protocol

Please check the additional documentation which explains other services provided within GPW WATS

• GPW WATS 4.01 Drop Copy Gateway
• GPW WATS 4.02 Post Trade Gateway
• GPW WATS 5.01 Risk Management Gateway

Please check the additional documentation describing the following:

• GPW WATS 2.03 Rejection Codes
• GPW WATS 2.04 BenDec Message Definition Format
• GPW WATS 6.01 Connectivity

It is recommended that you read the GPW WATS 1.01 Trading System document first.