About documents required

Dear friends,
I am submitting my appeal for settlement visa refusal. The visa was refused because of finacial reason whereas my sponsor income is proper. The ECO missed my one of my sponsor pay slip thats why he refused my visa application . Now I am submitting the visa appeal.and I think that ECM will overturn the refusal.Do I need to submit all documents like accomdation and relationship document or only my sponsor finiacial document? Please tell what documents I need to send to ECM and if ECM upheld the refusal , DO i need to send all the other documents also. Please reply.

My understanding is you only need to submit additional documents to support your application, specifically addressing the reasons for refusal.