Missing Software Model

Has anyone encountered a "Missing Software Model" error message when creating an entitlement in SAM Pro Orlando or beyond? More specifically, it is believed that the "Active" software definition does not have a product value which results in the error message. That said, is this a known global error/issue or could this be a localized environment issue?  Additionally, if missing software model is encountered during bulk import, the record is skipped and no entry is made to the Import Error log.