Payment Batch - Invoice selection

Hi All,

We we ran Payment Batch few invoices are not picked up by the Payment Manager. We checked Pay through date, Invoice Validation, Pay Group, Payment Currency, OU all these parameters are eligible by the specific Invoices but still those invoice are not picked up by Payment Batch.

For few invoices we noticed that there is Negative and Zero Amount. 

Any pointers on this highly appreciated.

Thanks,

Pavan