Inventory Item sales in AR

Hi All,

Version of Ebs 12.1.3

Modules in use:

Inventory Management

Receivables

Order management is installed but not used.

Question:

We are selling inventory items and creating manual invoices in AR, in standard memo lines inventory items are selected.

How can we integrate and account the inventory item sales part and reduce inventory stock? we do not want to use sales order module.

Any help would be highly appreciated.

Thank you

Senthil