SAP S/4 HANA Ariba Sourcing Ariba Supply Chain Collaboration (SLP) Ariba Supplier Lifecycle & Performance (SLP) CBA automation tool LTEH SIM Portal (IT support ticketing) eDoc approval workflow system SAP-eDoc integrated system Epsilon IPMS MOSS (pre-order) Non-Ariba invoicing Portal Non-PO invoicing Portal POMS (post-order) Bank Guarantee Tracking Portal Others (ImPACT etc.) Advances & retention payment application LTEH SIM Portal (invoice query management) LTEH SIM Portal (exception approval management)