See:
Greenhouse Plants, Ornamental - Impatiens Necrotic Spot
Symptoms Round, brown leaf spots and/or zonate spots or rings. Other symptoms can include leaf mottle, stem or petiole lesions, and irregularly shaped necrotic lesions or plant stunting.
Reference Harlan, B.R., and Hausbeck, M.K. 2018. Diseases of Coleus. In McGovern, R.J. and Elmer, W.H. (eds.) Handbook of Florists' Crops Diseases. Springer Int.