Support for a metadata dictionary rule that checks for duplicate idnos. This warning should be included in the “Problems” browse, rather than broken out as a separate facet
Expression to detect dupe idno would be: idnoUseCount(^ca_objects.idno) > 1
idnoUseCount() takes an idno as its first parameter and, optionally, a table as it's second. If the table is omitted ca_objects is assumed. It returns the number of times the idno is currently used. > 1 means dupes.