Case Study
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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Talk To ExpertsThe 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
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