Janith, for an IFS employee asking such a question here is a shame :)

We do not have IFS version reference here, but in general, there is a window in the system showing installed components, if SINWOF module (supplier invoice workflow) is on the list - it is installed.

You would also see “invoice Workflow” module in the navigator.  The Invoice workflow basic data comes with Invoice Payment Authorizers, however with the module installed you would also see additional set up forms for invoice posting authorizers, etc.   

@Adam Bereda there is nothing to be ashamed of .This post was created to increase community engagement of customers as per  the evaluate and classify process

Creating a post like this on behalf of the customer may help other users also to sort out similar issues.

BR/Janith