Hello, ESRI is aware of the problem. Bug NIM082764: Analyzer error 00007: Layer's definition query is invalid is appearing when publishing unexpectedly when publishing enterprise data with a definition expression based on the geometry fields. Alan Hi, Thanks for your reply. I couldn't find any reference to 'NIM082764' but I did find this one 'NIM083369' - I suppose the only possible solution is to duplicate the area fields? Aled
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