I do think that for countries to harmonise their systems, they need to define how the system should be and the interactive relationships; That is all about a system enterprise architeture (pictoral view) including the what is it/information? when should the data/information be required/collected? who should collect what? and HOw? (Just use the five wives and one husband principle).
an enterprise architecture should be discussed and agreed upon by all stakeholders but under the leadership of government; This will help good data governance structure be build and exchange the information;
Pepela Wanjala: Health information specialist MOH/ Kenya