Place the diced cucumbers into a strainer and toss them with a large pinch of salt. Let them sit and drain for about 10 minutes. Pat them dry with a paper towel to remove any excess moisture and continue with the recipe.
Place the butter beans, corn, cucumber, cherry tomatoes, red onion and parsley in large bowl. Stir gently to combine.
In a small bowl, whisk the sour cream, lemon juice, salt, and dill.
Pour the dressing over the ingredients in your large bowl. Stir gently to combine.
Chill in the fridge or serve immediately.