How can shared services teams standardize AP processes across multiple business units?
- Key takeaway
- Introduction
- What AP standardization actually means
- Why AP standardization is difficult across business units
- The core AP processes shared services teams should standardize
- How automation supports standardization
- How to evaluate AP standardization maturity
- Building a sustainable AP operating model
- Frequently asked questions
Hear what's covered in this article:
Key takeaway
Shared services teams standardize AP processes by creating consistent workflows for invoice intake, approvals, exception management, supplier governance, and reporting across business units. The most successful organizations establish a common operating model supported by governance, performance metrics, and automation, allowing AP processes to remain consistent across entities, regions, and ERP systems.
Standardizing accounts payable across multiple business units requires more than centralizing AP activities. Organizations need common workflows, controls, and governance that define how invoices are processed, approved, managed, and reported across the business.
The challenge is that business units often develop different approval structures, supplier management practices, exception workflows, and ERP environments over time. These differences can reduce visibility, create inefficiencies, and make it harder to enforce consistent controls.
Shared services teams address this by creating a standardized AP operating model and using automation to enforce process consistency while supporting legitimate local requirements.
What AP standardization actually means
Many organizations use the terms centralization and standardization interchangeably. While the concepts are related, they are not the same.
Centralization changes where AP work happens. Standardization changes how AP work happens.
An organization can centralize invoice processing within a shared services center while still allowing business units to follow different approval structures, supplier management practices, exception handling procedures, and reporting methods. In this situation, work is centralized, but the process remains fragmented.
True AP standardization creates consistency across the core activities that drive accounts payable performance, governance, and visibility.
These activities typically include:
Invoice intake
Data capture
Invoice coding
Approval routing
Exception management
Supplier management
Payment controls
Reporting and analytics
Audit documentation
When these processes are standardized, organizations get a clearer view of accounts payable (AP) performance across business units. Leaders can compare cycle times, identify bottlenecks, assess compliance, and implement improvements more effectively.
Standardization also helps with scalability. As invoice volumes grow or new entities are acquired, organizations can integrate new operations into an existing framework rather than create new processes.
Most importantly, standardization provides the foundation for governance. It ensures policies are consistently executed across the organization, not just documented.
Why AP standardization is difficult across business units
Most AP process variation develops gradually as organizations grow.
Business units often create local procedures to address operational needs, customer requirements, regulatory obligations, or system limitations. These decisions may make sense at the local level, but over time, they create a fragmented AP environment that becomes increasingly difficult to manage.
Several factors commonly contribute to this challenge.
Multiple ERP systems
Many organizations operate multiple ERP environments across business units.
This often occurs after acquisitions, geographic expansion, or years of technology investments made independently by different parts of the business. Each ERP may support different workflows, approval structures, reporting capabilities, and supplier records.
Even when teams perform similar work, they may be following entirely different processes because their systems are configured differently.
As a result, shared services leaders struggle to establish visibility and consistency across the organization.
Regional policies and local requirements
Organizations operating across countries and regions must account for varying tax regulations, invoice requirements, payment practices, and compliance obligations.
While these differences are legitimate, they can lead to unnecessary process variation when local requirements are used the justify maintaining entirely separate workflows.
Successful shared services organizations distinguish between requirements that truly need localization and processes that can be standardized globally.
Different approval structures
Approval workflows often evolve independently within business units.
One team may require three levels of approval for non-PO invoices. Another may rely on a single approver. Approval thresholds, escalation paths, and delegation rules frequently vary based on local preferences rather than organizational standards.
Over time, these differences create inconsistent experiences for both AP teams and stakeholders.
Legacy acquisitions
Acquisitions are one of the most common sources of AP process variation.
Newly acquired entities often bring their own systems, suppliers, workflows, and approval practices. Many organizations postpone standardization efforts to avoid disrupting operations, which allows process variation to persist for years.
Eventually, shared services leaders are tasked with managing a patchwork of inherited processes, making reporting and governance significantly more difficult.
Local supplier management practices
Supplier onboarding, maintenance, and change management often vary across business units.
Some teams may require extensive documentation, while others rely on informal procedures. Duplicate supplier records, inconsistent naming conventions, and varying approval requirements can create reporting challenges and increase operational risk.
Without standardized supplier governance, maintaining accurate master data becomes increasingly difficult.
Email-based exception handling
One of the most significant barriers to AP standardization is how organizations manage exceptions.
Many companies successfully document standard invoice workflows but allow exceptions to be resolved through email, spreadsheets, and informal conversations.
Disputed invoices, missing purchase orders, coding questions, and supplier inquiries often leave the structured workflow environment entirely.
As exception volumes grow, organizations lose visibility into process performance, creating auditability challenges. What appears to be a standardized process on paper often breaks down in practice because exceptions follow a completely different path.
The core AP processes shared services teams should standardize
Organizations do not need to standardize every aspect of accounts payable simultaneously. However, certain processes disproportionately affect efficiency, visibility, and governance.
Invoice intake
Invoice intake is the front door to the AP process.
When invoices arrive through multiple channels, including email inboxes, paper mail, supplier portals, and individual employees, organizations struggle to maintain consistency and visibility.
Standardized invoice intake ensures invoices enter the process through controlled channels regardless of business unit or location.
Data capture
Once invoices enter the system, organizations need a consistent approach to extracting and validating invoice data.
Different capture methods often lead to inconsistent data quality, processing delays, and reporting challenges.
Standardized invoice data capture improves accuracy and establishes a reliable foundation for downstream workflows.
Invoice coding
Coding practices frequently vary across business units, especially after acquisitions.
Different teams may apply account structures, cost centers, and project codes differently, even when processing similar expenses.
Standardizing coding practices improves reporting consistency and supports more accurate financial analysis.
Approval routing
Approval workflows should follow common governance principles across the organization.
Approval thresholds may vary by entity, business unit, or role, but the underlying framework should remain consistent. This creates accountability while reducing unnecessary complexity.
A standardized approval structure also makes it easier to demonstrate compliance and enforce policies consistently.
Exception management
Exception management is often the most important area to standardize.
Organizations frequently focus on optimizing routine invoice processing while overlooking how exceptions are handled. Yet exceptions often represent the largest source of delays, manual effort, and process variation.
Shared services teams should establish clear workflows for disputed invoices, missing purchase order information, coding issues, supplier inquiries, and approval delays.
When exceptions remain inside controlled workflows, organizations maintain visibility and accountability throughout the process.
Supplier management
Supplier data affects nearly every aspect of accounts payable.
Standardized onboarding procedures, maintenance processes, and change management controls help improve data quality and reduce operational risk.
Consistent supplier governance also supports reporting, compliance, and audit readiness across business units.
Payment controls
Payment controls help ensure consistency and reduce risk throughout the payment process.
Shared services teams should establish standardized controls for payment approvals, segregation of duties, changes to banking information, and payment execution procedures.
These controls strengthen governance while supporting regulatory and audit requirements.
Reporting and audit trails
Organizations cannot improve what they cannot measure.
Standardized reporting allows shared services leaders to compare AP performance across business units and identify opportunities for improvement.
Consistent audit trails provide transparency into how invoices move through the process and support compliance initiatives.
How automation supports standardization
Standardization is difficult to maintain with policies and documentation alone. As organizations grow, shared services teams need systems that reinforce consistent processes across business units.
Accounts payable automation streamlines workflows for invoice routing, approvals, exception handling, and reporting. It gives teams a way to enforce governance while reducing manual effort.
It also supports flexibility. Different entities may need unique approval limits, tax rules, or ERP connections. Automation allows those local requirements to fit within a shared framework instead of creating separate processes.
With centralized visibility into invoices, approvals, exceptions, suppliers, and performance metrics, leaders can manage AP more consistently across the organization and identify opportunities for improvement.
How to evaluate AP standardization maturity
Organizations vary significantly in their level of AP standardization.
Some operate in highly decentralized environments with minimal process consistency. Others have established mature shared services models supported by common workflows, governance standards, and automation.
Evaluating AP standardization maturity can help organizations identify opportunities for improvement.
Level 1: Decentralized
Business units operate independently with separate processes, workflows, reporting methods, and supplier management practices.
Visibility across entities is limited, and process performance varies significantly.
Level 2: Partially standardized
Some common policies and procedures exist, but business units continue to follow different workflows and approval structures.
Reporting consistency remains limited, and exceptions are often handled outside formal processes.
Level 3: Governed
Shared services teams establish common workflows, governance standards, and performance metrics across business units.
Most AP activities follow a consistent operating model, although some variation remains.
Level 4: Optimized
Organizations combine standardized processes with automation, centralized visibility, and continuous improvement practices.
Business units operate within a common governance framework while maintaining flexibility for legitimate local requirements.
To assess your organization's maturity, consider the following questions:
- Are workflows consistent across entities?
- Are exceptions managed inside controlled workflows?
- Can leaders measure AP performance across business units?
- Are approval policies enforced systematically?
- Is supplier data governed consistently?
- Can multiple ERPs operate within a unified AP process?
The more consistently an organization can answer yes to these questions, the more mature its AP standardization efforts are likely to be.
Building a sustainable AP operating model
Successful AP standardization isn't a one-time project. It's an ongoing effort to create consistency, visibility, and control in a growing organization.
The best shared services organizations aren't always the most centralized but are the most standardized. They establish clear process ownership, common governance standards, consistent performance metrics, and technology that reinforces those standards.
Medius helps shared services teams with configurable workflows, centralized visibility, and automation that works across multiple business units, entities, and ERPs. This allows organizations to create a common AP operating model without sacrificing local flexibility.
When these elements work together, AP becomes easier to manage, measure, and scale.
Frequently asked questions
AP standardization means creating consistent workflows, controls, and performance metrics for invoice processing, approvals, supplier management, exception handling, and reporting across business units.
Centralization changes where AP work is performed. Standardization changes how AP work is performed. An organization can centralize AP without fully standardizing its processes.
Different ERP systems, approval structures, supplier management practices, regional requirements, and exception handling methods often create process variation that becomes difficult to manage as organizations grow.
Most organizations begin with invoice intake, data capture, approval workflows, exception management, supplier management, payment controls, and reporting.
AP automation helps enforce consistent workflows, improve visibility, reduce manual effort, and support governance across multiple business units.
Yes. Many organizations standardize AP governance, workflows, controls, and reporting while operating multiple ERP systems.
Consistent workflows, controls, documentation, and audit trails help organizations improve audit readiness, strengthen governance, and reduce process variation.
Common metrics include invoice cycle time, touchless processing rates, exception volumes, approval turnaround times, cost per invoice, and compliance performance.
Organizations should evaluate workflow flexibility, multi-entity support, ERP integration capabilities, exception management, reporting, governance controls, and visibility across business units.
