Abstract KEYWORDS: Administrative Business Register, Integrating data, coverage ,quality, statistical business register, unique ID, matching process 1. INTRODUCTION The Administrative Business Register considered as one of the most important examples of the Integrating data from several sources that contains different forms of data, in terms of coverage and quality. And that is because of the difference in registration methodologies and main purpose of recording for each source. In the Palestinian case PCBS build a preliminary version of the register with collecting data from all sources that register the economic establishments in Palestine, regardless of the registration methodology; Ministry of National Economy, Chambers of Commerce, Municipalities and Ministry of Finance. by matching the census data that collected by the National Statistical System, PCBS will get the so-called the statistical business register, that use sampling frame in Surveys. The Integration between all sources by matching the data of each source to the "backbone" file, is considered the Palestinian case whish is also "Ministry of National Economy" file because this file gives the "unique ID" that required in matching process. 2. METHODS matching all files from sources will lead to build the Administrative Business Register, and will be the first core to standardize model for all partners that are create the registry. 3. METHOD RISKS matching process is encountered by several obstacles and difficulties; such as poor data quality, as the fact that most of sources have a rubbish data and there is no unified identification number to be matched according to it.