We have a product which connects multiple databases of ACCPAC ERP with single Database of Sage CRM. Sage CRM supports Multiple Company for Sage CRM 6.0 and ACCPAC 5.4 Integration. For previous Sage CRM versions, you can have a look at our one of the GUMU products.
The Product is named as GUMU for Sage CRM – Sage Accpac ERP Multiple Company Integration, for more information about the product please visit our website http://greytrix.com/sage/crm.htm#multicomp