Hi,
We are using openfn to integrate with DHIS2, for cases it can be tricky to avoid duplicate (once sync the phone send the registration and follow up form millisecond apart, this create 2 push) but we managed it.
If one is interested we are working on openHIM meditor that work with the configuration from openFN (it use openfn core),in order to sustainable solution when the project ends. GitHub - SwissTPH/openfn-openhim-mediator: Js mediator to use openfn scripts in openHIM
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