The extended maintenance offered by SAP for several older releases, including SAP R/3 4.6C, SAP R/3 Enterprise and SAP ERP 2004, will end on March 31, 2013, and systems still running on the releases concerned will automatically enter into the customer-specific maintenance phase. Customer-specific maintenance is covered by the existing support contract, so no additional contract is required, and no additional fee applies.
Customers still running on old releases are faced with the decision to upgrade to the latest release or to remain on the old release and continue to run this release in customer-specific maintenance. During customer-specific maintenance, customers continue to receive many features of SAP support for the relevant releases, but the scope of support changes because SAP no longer adapts the releases to new or changed external requirements. Please refer to SAP Note 52505, the SAP Service Marketplace (https://service.sap.com/march2013) and the presentationon customer-specific maintenance for more details, and also ckeck the FAQs.
All direct SAP Enterprise Support customers, that take an upgrade to SAP ERP 6.0 into consideration, can register to the Upgrade Now! program until the end of April via https://service.sap.com/upgradenow. Upgrade projects will be supported until the end of 2013 provided that the customer registers for the Upgrade Now! program until April 30, 2013. Through the Upgrade Now! program registered customers will receive additional support from SAP during their upgrade project such as services, knowledge transfer and a dedicated upgrade support advisory. The Upgrade Now! program is included as part of the SAP Enterprise Support agreement and offered at no additional cost.
 Relevante Releases: SAP R/3 4.6C, SAP R/3 Enterprise 47×110, SAP R/3 Enterprise 47×200, SAP ERP 2004 / SAP ECC 5.0 SAP NetWeaver 2004 / SAP Web AS 6.40, SAP SCM 4.1, SAP SRM 4.0, SAP SEM 4.0, SAP Exchange Infrastructure 3.0, SAP MDM 5.5