Remoteprint with Crystal Reports and SAP B1

Hello experts,

I have a customer requirement to print Crystal Report Documents from SAP Business One (e.g. Invoice, Delivery Note, ...) via 3rd party Application.

The scenario is something like:

The customer uses a php web application to execute all logistic processes via Business One Service Layer.

Now we are missing the possibility to get the Documents for Invoices, ... e.g. a API

The created Documents should be saved as a pdf on a network share.

How can this requirement be fulfilled? Are there any how-to guides available?

I myself have little knowledge about crystal reports, so please be as specific as possible. Thank you.

Any help is appreciated.

Kind Regards

Robert