I have observed unsuccessful Runs from a GCR Skillz Malaria intervention with an error message ERROR_HTTP_400: Bad Request.
Kindly refer to these OpenFn Links
https://www.openfn.org/projects/grs-integrations/runs/0655352e-7f3d-707d-adfd-a801c86d0f37
https://www.openfn.org/projects/grs-integrations/runs/06553185-a54b-7abe-a74d-698c3be4927a