Why Export Set delta not working on incident_metric table Issue Export set delta on incident_metric table not working even though it set up correctly. Refer to the below screenshot: Causeincident_metric is not a table. It is a join between the incident and metric_definition tables and it does not have the column sys_updated_on. We can see the above image delta setup on the "sys_updated_on" column.Resolution If we want to enable "delta" on this table, set the Scheduled Export Data record to the inc_sys_updated_on column. * Go to "Scheduled Data Export" dictionary go to column " Delta on or after" * Go to choices add new column under choice- inc_sys_updated_on. * Once done this go to schedule export and see the "Delta on or after" you will find a new choice to select "inc_sys_updated_on". * Select this new Column 'inc_sys_updated_on' from choice list. This will help to apply delta on incident_metric table for incidents.