Hello Cristina: Many thanks for you contribution. Could you please also clarify following properties being used in APEL schemas. 1). LcgRecord's "BaseCpuTime" and "BaseCpuTimeSeconds" property In OGF UR version 1.0, the @urf:usageType attribute is used to distinguish "user" and "system" usage. So what these two LcgRecord properties to be mapped, user or system? 2). Same as "SumCpu" and "NormSumCpu" properties in Lcg Anonymous and user aggregate schemas. 3). You also represented 7 extension properties in LcgRecord schemas. If you have to map them as extension properties being defined in OGF UR extension framework, what you would like to express them. You may specify your options or simply confirm/correct following mappings: -------------------------------------------------------------------------------------- | LcgRecord Property | UR Property (XPath Expr.) | |------------------------------------------------------------------------------------| |ExecutingSite | //urf:Resource[@urf:description='ExecutingSite' | |------------------------------------------------------------------------------------| |SpecInt2000 | //urf:Resource[@urf:description='SpecInt2000' | |------------------------------------------------------------------------------------| |SpecFloat2000 | //urf:Resource[@urf:description='SpecFloat2000' | |------------------------------------------------------------------------------------| |EventDate | //urf:TimeInstant[@urf:type='EventDateTime' | |------------------------------------------------------------------------------------| |EventTime | //urf:TimeInstant[@urf:type='EventDateTime' | |------------------------------------------------------------------------------------| 4). Finally I presume the "MeasurementDate" and "MeasurementTime" should be mapping to /urf:RecordIdentity/@urf:createTime attribute as the creation timestamp of a row or a usage record. Could you please also confirm it as well. X. Chen BITLab School of Engineering and Design Brunel University, Uxbridge Middlesex, UB8 3PH London