Duplicate Accounting Documents Created

Dear Experts,

I ran Payroll for the Employees as every month I do.. ( PCP0 - Live Posting Run - Post Documents )

But in this Month, Many Accounting Documents are created. In these accounting documents, Same Vendors are duplicated in multiple accounting documents.

Can anyone Please help me out, why this has occurred and how multiple accounting documents are created.

Many Thanks in advance...

Regards