Event ID - 1530

Event Id1530
DescriptionCREATE INDEX with DROP_EXISTING was aborted because a row was out of order. Most significant offending primary key is %S_KEY. Explicitly drop and create the index instead.
Event InformationAccording To Microsoft:

This error occurs when you try to create an index using the DROP_EXISTING clause of the CREATE INDEX statement on a column or columns containing data that is not in sorted order. When this error occurs, no index is created.

The DROP_EXISTING clause speeds the creation of an index when the data in the table is already in order. The space required to build a clustered index is less when the DROP_EXISTING clause is used.

The DROP_EXISTING clause speeds index creation only for clustered indexes or unique nonclustered indexes. Creating a nonunique, nonclustered index with the DROP_EXISTING clause may succeed, but there is no improvement in performance.

Use either of these strategies:
Execute CREATE INDEX with the DROP_EXISTING clause.

Drop and re-create the index without any clauses.
You can also use the SORTED_DATA_REORG clause, which physically reorganizes the data.
Reference LinksMicrosoft product: SQL Server Version: 2000.80.760.0 Event Source: MSSQLServer Event ID: 1530

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