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

- Solid 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

📌 SAPCP Functional & Integration Specialist (Calgary)
🏢 W3Global
📍 Calgary