Update a custom field value for contactCopy Pageput https://{youraccountname}.api-us1.com/api/3/fieldValues/{id}Path ParamsidstringrequiredID of the fieldValue to updateBody ParamsfieldValueobjectfieldValue objectuseDefaultsbooleanDefaults to falseIf true, this will populate the missing required fields for this contact with default valuestruefalseResponses 200200 400400Updated 9 months ago