The client, a Europe-based multinational corporation (MNC) embarked on a migration program to transition their legacy manufacturing plant into an enterprise system. Their bespoke, custom-built systems with the finance module were hosted on AS/400 and maintained for over two decades.
Infosys assisted the client in visualizing a hybrid system aimed at integrating critical business workflows across SAP and AS/400 applications. This setup enabled bi-directional high- throughput ensuring streamlined data flow and processing. Infosys managed the transition during the maintenance week, which helped lower overall impact with zero disruption to day-to-day business operations.
Key Challenges
- High-cost impact in case of delay in integrating legacy AS/400 systems with the SAP ERP solution
- Challenges due to opaque legacy systems and documentation in the local language hindered efficiency
- Decision-making bottlenecks owing to the complexity involved in data migration and synchronization
- Tough transition timelines during the COVID 19 pandemic
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The Solution
Digital evolution of pharma giant: Modernizing the client’s legacy AS/400 to core SAP ERP infrastructure
As part of the client’s legacy modernization, Infosys successfully completed the following critical activities:
- Migrated finance and logistics execution processes to SAP ECC.
- Built 21 interfaces and 110 adaptations between AS/400 and SAP systems to facilitate seamless integration
- Conducted as-is functionality porting, interface data screening as well as migration, and ensured proper verification
- Orchestrated hybrid disposition of critical functionalities
- Executed two-phase implementations to de-risk the transition
- Conformed strictly to the change management process to avoid project timeline deviation
- Proactively engaged with stakeholders to coordinate end-to-end testing, execute data load simulations, develop cut-over plans, and manage execution
Leveraging best hybrid solutions between enterprise SAP ERP and legacy MES for improved compliance
As a trusted strategic partner for the client’s AS/400 modernization, Infosys:
- Developed a well-defined and structured transition plan to ensure successful knowledge transfer from the local contractors to the Infosys team.
- Utilized Infosys tools for porting as-is functionality, interface data screening, data migration, and verification
- Executed functional integrated screening before UAT to identify gaps early and fix them, resulting in accelerated operational, infrastructure, and performance qualification phases of the program
- Introduced a configurable intermediate process order type (IPO) and reconciliation, providing additional flexibility and compliance to the site
- Provided on-time production deployment and post go-live staff augmentation for business-as-usual support
Benefits
Reduced the technical debt by removing 70% of legacy lines of code
Cut down about 38% of legacy database tables improving data standardization and enabling informed decision-making
Decommissioned two downstream legacy applications reducing infrastructure costs
Achieved on-time go-live of the hybrid integrated solution spanning across SAP and AS/400 and helped improve time to market
Enhanced agility and enabled client readiness to upgrade to SAP S/4 HANA Cloud ERP
