The Library Maintenance Focal Point is responsible for the development of the UN/CEFACT Core Component Library (CCL) and works to ensure consistency and harmonization of Core Components submitted from all business domains and sectors, contributing to a concise and well-defined glossary of Core Components, business information entities (BIE), data types, business terms, business data semantic definitions, and document assemblies (CCBDA).  In addition, the Focal Point shares responsibility for the UNECE Code Lists with the Code List Focal Point and the UN/EDIFACT Focal Point.

The CCL is used to produce UN/CEFACT XML schema, Requirement Specification Mappings (RSMs) and Reference Data Models. 

The Library Maintenance Focal Point is the successor of TBG17 “Core Component Harmonization”. 

Based on submitted change requests, the Library Maintenance Focal Point develops an updated CCL twice yearly.  

The process includes the following steps:
a)	Accept submissions to the CCL
b)	Perform technical assessment of the submission
c)	Review/harmonize submission
d)	Add the approved components to the next version of the CCL
e)	Produce the next version of the CCL
f)	Perform Extreme Quality Assurance (QA) of the CCL
g)	Submit the CCL to the Validation Focal Point
h)	Participate in UN/EDIFACT Data Maintenance Request (DMR) processing for Code Lists

•	UN/CEFACT XML schema
•	Code Lists
•	Requirement Specification Mappings 
•	Reference Data Models