[Dhis2-users] Could not save data set (Invalid reference [e1sXdbpUsU7]

Hi, Can someone assist on how to deal with this error message "Could not save data set (Invalid reference [e1sXdbpUsU7] (DataElementCategoryCombo) on object Chronic Diseases [NXTpxbBK5lf] (DataSet) for association `categoryCombo`.) " while trying to save the edited data set? I am running instance

Re: [Dhis2-users] DHIS2 Certification...

Nayeem, Sorry i thought it is the online academy On Tue, Jul 24, 2018 at 2:18 AM, Nayeem Al Mifthah wrote: > Dear Moemedi Ntunyane > You can check on www.dhis2.org/academy > > For reading materials check https://www.dhis2.org/documentation > > > *Nayeem Al Mifthah* > *Health Information Systems