Mark Dataset Complete

Hi everybody,
I have saved data for a dataset but did not mark it complete, now i want to mark all saved data complete,
I am trying to do so using myurl/api/26/completeDataSetRegistrations
Response i receives

{"responseType":"ImportSummary","status":"SUCCESS","importOptions":{"idSchemes":{},"dryRun":false,"async":false,"importStrategy":"CREATE_AND_UPDATE","mergeMode":"REPLACE","skipExistingCheck":false,"sharing":false,"skipNotifications":false,"datasetAllowsPeriods":false,"strictPeriods":false,"strictCategoryOptionCombos":false,"strictAttributeOptionCombos":false,"strictOrganisationUnits":false,"requireCategoryOptionCombo":false,"requireAttributeOptionCombo":false},"description":"Import process completed successfully","importCount":{"imported":0,"updated":0,"ignored":0,"deleted":0}}

Can anyone help why it is not marking dataset as complete?

Regards,

ยทยทยท

--
RAJA IMRAN QAMER,

Senior Software Engineer, Project Manager,
PACE TECHNOLOGIES Pvt Ltd.,
Islamabad, Pakistan.
Email:imran@pace-tech.com, rajaimranqamer@gmail.com
Phone: +923345073573, +92512361110
Web: www.pace-tech.com