Bill of Exchange process flow

Hi All,

My client had Bill of Exchange concept. i have one query on this

1) Through MIRO we received the invoice

2) By using F-40 i am posting the BOE payment. at this time Vendor open item will be cleared and new open item will be opened with SPL GL Indicator "W". My doubt is how can i clear this SPL GL open item?? what is the actual process flow for this BOE Concept.

Regards,

Shobha.