Hi All, While importing COA was not able to find summary field for mapping, I imported COA without mapping summary field. Now after import I want to update summary field for COA. Does anyone have idea how I can update summary field in bulk bcos I don't want to update it one by one. Thank you so much in advance for help.

Is it that many? Create a custom Summary checkbox field that you can update via CSV import and have a workflow copy the value to the standard Summary field. Would have been easier if it was done upon creation.