Take a plate or bowl add 1 cup wheat flour, salt, oil, make medium soft dough by adding little by little water, make medium soft dough, keep the in rest for 15 min.
Now divide the dough into 4 part, dust with dry flour, roll it 8 diameter circle chapati
Heat the tava, on medium flame, place the chapati on it, cook the chapati on both sides till light brown colour spots are not appeared , make all the chapati in same way, keep the all chapaties aside
Heat a pan add 2tbs oil, add chopped garlic, chopped ginger and green chillies cook it till raw flavor gone
Now add chopped onion, cook it till it turn into pink in colour.
Now add chopped tomatoes, salt, piri piri powder, cook well till all tomatoes become massy.
Now add boiled and mashed rajma beans, and tomato sauce mix well and cook till for 2 to 3 min, add water if required
For making curd dressing : take a bowl add curd, salt and grated carrot, and cucumber, mix all togather.
For assembling : reheat the chapti on tava, spread chilli garlic chatney on it,
Place rajma mixture on it.
On top of rajma mixture, add curd dressing
Fold it from 3 sides,
Wrap in tissue paper, serve immediately.