This tool can be found in the Administration Control Panel (My Profile > Occurrence Management > name of collection).

To use the tool, first select whether you would like to list duplicates based on Catalog Numbers or Other Catalog Numbers from the “List Duplicates based on…” box. If duplicates exist, a table of duplicate records will appear on the resulting page.

From here, you can evaluate whether the duplicate records should be edited, merged, or ignored. To view and/or edit a record, click the number in the ID column next to the record you wish to view. This will open that specimen’s Record Editor page.

If you decide that the two records should be merged, check the boxes next to both duplicates, then select the radio button that corresponds to the record you wish to make the primary record. If both records have a value in a given field, Symbiota will keep the value that belongs to this primary record and discard the other value. When you are satisfied that the correct information will be retained, click the Merge Duplicate Records button.