There are many ecc_queue records with source range_cache, however there's no change on Discovery IP rangeIssue There are many ecc_queue records with source range_cache, however there's no change on Discovery IP range.CauseWe have backend monitoring listener on the discovery range tables: discovery_range discovery_range_item discovery_range_item_ip Please check if any records on these table have been modified / updated. Also, please check dictionary table to see if these tables have been modified to have new reference fields, for example, below dictionary shows discovery_range_item has a custom reference field to Account table. If so, please open the dictionary, click on "Advanced view" link at the bottom, then change Reference cascade rule to "None" as in the screenshot below. (note: not -- None --) Otherwise if any record is deleted on the reference table, the range_cache probe is also launched.