Undo MDG-F DELETED OF Data Model

Hi People,

As per a document here, I deleted OF DM, so that the new Data Model OG would be used well..

Deleting Data Model 0F - Master Data Governance for Financials - SAP Library

Now I get an error that no active version of OG exists.. Is there a way to undo deletion of OF or how to make OG usable?

OG is activated, but does not display in SA38-> USMD_DATA_MODEL report..

Says no active version of OG exists here.. Is there we can do to undo the deletion of OF so that OG works well??

Thanks,

Nisha