The classification of data in an enterprise is a daunting task but, roughly, there is reference data and transaction data. Sub-categories of transaction data are: orders, invoices, tickets, … . Many of the projects that I have been working on involve in one way or another synchronization of orders, meaning keeping the orders state consistent across multiple sub-systems. In time, a few patterns emerged and we built tools to implement these patterns. The kit consists of XML schemas and Java libraries for: canonical representation of Product/Service/Resource orders, decomposition and status aggregation of status, web-services interfaces based on NGOSS SID and OSS/J (JSR 89 and JSR 264).
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