I want to be direct with you: Generating them without proper authorization from SAP (e.g., using unofficial keygens, cracks, or bypass tools) would violate SAP's licensing terms, potentially constitute software piracy, and could expose you or your organization to significant legal and financial risks.
I notice you're asking about a "good post" concerning an SAP R/3 license and object key generator. sap r3 license and object key generator