SAP C4CP Functional & Integration Specialist

Project: C4CP Replacement/Customer Payments Portal

Role Type: Project-based Functional/Technical SME

Primary Platforms: SAP S/4HANA, SAP Cloud for Customer Payments, SAP Integration Suite/CPI, SAP APIs

Role Overview We are seeking an experienced SAP Cloud for Customer Payments (C4CP) Functional & Integration Specialist to support the replacement of the existing C4CP customer-facing portal.

The current C4CP solution provides customers with self-service access to account information and capabilities including viewing account statements, invoices, payments and related information. Also includes payment/invoice matching, payment advice, payment creation/management, master-data management and account assignments as C4CP capabilities.

The successful candidate will bridge SAP functional knowledge, SAP technical/API knowledge and solution integration , helping the project team understand how current C4CP functions are implemented and how those capabilities should be reproduced through the replacement portal.

Key Responsibilities

• C4CP Functional Analysis & Reverse Engineering
• Analyze the existing C4CP implementation and document end-to-end business processes, underlying SAP dependencies, configuration and data flows.
• Translate existing C4CP functionality into detailed functional and technical requirements for the replacement solution.
• Distinguish UI functionality from underlying SAP processing, configuration and integration behavior.
• Identify required input/output fields, business rules, status handling, filters and dependencies for each C4CP capabilities implemented at client
• SAP API Assessment & Data Mapping
• Identify and assess SAP APIs required to replace current C4CP functionality.
• Map C4CP functional requirements and data elements to corresponding SAP API fields.
• Validate API request/response structures, filtering requirements and business-partner restrictions.
• Identify functionality or data not supported through standard APIs and recommend appropriate SAP-side solutions.
• Assess impacts from API changes, deprecated interfaces and SAP release changes.
• Payment & Accounts Receivable Processes

Provide Functional Expertise Across C4CP-supported Customer Payment Processes, Including

• Open invoice retrieval
• Full and partial payments
• Multiple-invoice payments
• Payment methods
• Payment status
• Customer account statements
• Payment history
• Due dates and document currency
• Payment blocks
• Credit/open-item handling
• Dispute Management Integration
• Understand C4CP integration with SAP dispute-management processes.
• Define requirements for creating and displaying disputes.
• Map dispute reason codes, statuses, comments, notes and amounts.
• Assess attachment upload/download requirements.
• Validate end-to-end interaction between the portal, SAP APIs and SAP dispute objects.
• Invoice & Document Integration
• Define SAP integration requirements for invoice display and download.
• Validate invoice/open-item APIs and associated data mappings.
• Assess document/attachment retrieval APIs.
• Support requirements for PDF and associated invoice-document downloads.
• Validate appropriate customer/account authorization when retrieving documents.
• Customer & Business Partner Integration
• Analyze customer/business-partner master-data requirements.
• Define account-to-user relationships and required SAP data.
• Validate Sold-To account authorization and filtering rules.
• Support integration and synchronization design between the customer portal and relevant master-data sources.
• Ensure APIs restrict returned information to appropriate business partners/accounts.
• SAP Integration Architecture

Work closely with solution architects, integration developers and SAP teams to define:

Customer Portal → Integration Layer → SAP S/4HANA Responsibilities Include

• SAP API/service identification
• API activation and validation
• Integration mappings
• Authentication/connectivity requirements
• Error-handling requirements
• SAP-side functional validation
• Integration testing
• Performance and data-volume considerations
• Configuration Assessment

Analyze existing C4CP configuration and determine how equivalent capabilities should be provided in the replacement solution, including areas such as:

• Pay My Bills
• Manage My Payments
• Display My Account Statement
• Customer/account master data
• Payment configuration
• Disputes configuration
• Attachment/download settings
• Layout and label configuration
• User/account assignment
• Administrative controls
• Testing & Solution Validation
• Develop SAP-focused functional and integration test scenarios.
• Support SIT and UAT.
• Validate API response/data accuracy against existing C4CP/SAP behavior.
• Troubleshoot SAP integration defects.
• Validate payment, dispute, invoice, master-data and document scenarios.
• Support regression testing associated with SAP upgrades/API changes.

Essential Required Experience

• Strong hands-on SAP S/4HANA experience.
• Strong SAP Accounts Receivable / FI-AR knowledge.
• Experience with SAP Cloud for Customer Payments (C4CP) or closely related SAP customer-payment solutions.
• Strong understanding of customer payments, disputes, invoices, open items and account statements.
• Experience with SAP APIs/OData services and integration patterns.
• Experience mapping SAP business processes to API-based applications.
• Ability to analyze API payloads, fields, filters and dependencies.
• Experience troubleshooting end-to-end SAP integrations.
• Ability to translate business requirements into SAP functional and technical specifications.

Highly Desirable

• SAP FSCM / Dispute Management experience.
• SAP Integration Suite / CPI knowledge.
• SAP Fiori experience.
• Customer/business-partner master-data knowledge.
• Experience with document or attachment retrieval from SAP.
• Experience modernizing or replacing SAP SaaS applications.
• Experience assessing deprecated SAP APIs/services and identifying successor interfaces.

Critical Skill Profile The Strongest Candidate Should Combine Three Skill Sets SAP Functional → FI-AR, payment processing, customer accounts, disputes, master data

C4CP Product Knowledge → Configuration, customer portal processes and underlying C4CP behavior

SAP Integration → S/4 APIs, OData, Integration Suite/CPI, mappings, authentication and troubleshooting