In AX 2009 it may happen that you delete a company but data related to this company remain in the database. You can use this script to delete this data:

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DECLARE @_tableName nvarchar(40)
DECLARE @_companyId nvarchar(4)

SET @_companyId = N'<company_id>';  -- replace <company_id> with required company 

DECLARE curSqlDictionary CURSOR FOR
SELECT A.SQLNAME
FROM SQLDICTIONARY A
INNER JOIN SQLDICTIONARY X ON X.TABLEID = A.TABLEID AND X.FIELDID = 61448
WHERE A.FIELDID = 0
	AND A.FLAGS = 0

OPEN curSqlDictionary

FETCH NEXT FROM curSqlDictionary INTO @_tableName

WHILE @@FETCH_STATUS = 0
BEGIN
	DECLARE @_sql nvarchar(4000)
	SET @_sql = N'DELETE FROM ' + QUOTENAME(@_tableName) + N' WHERE DATAAREAID = @_dataAreaId'
	
	EXEC sp_executesql @_sql, N'@_dataAreaId nvarchar(4)', @_dataAreaId = @_companyId  
	
	FETCH NEXT FROM curSqlDictionary INTO @_tableName
END

CLOSE curSqlDictionary
DEALLOCATE curSqlDictionary

Martin F