I started to submit for first time one application for 3 items/incidents which are all invoiced on one statement and also recorded by Med Scheme on one document

I started to submit for first time one application for 3 items/incidents which are all invoiced on one statement and also recorded by Med Scheme on one document. Why then require us to split it in 3xclaims. We are still waiting for outcome of 2 claims. Tkanks nevertheless for fairly quick responses.