Hi, best practise is to use exiting APIs instead of checking DB tables. For documentation of the available MDG APIs, please check http://go.sap.com/documents/2015/07/666e4158-5b7c-0010-82c7-eda71af511fa.html In your case, use of IF_USMD_MODEL_EXT seems sufficient (read-only access) - the interface documentation is pretty comprehensive, I believe. Best regards, Ingo Bruß
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