SAP S/4HANA: the reference ERP, its strengths and its limits in daily operations

There is a phrase that is frequently heard in the IT departments of large Spanish companies: “we have SAP for everything”.

The phrase is, in part, true and, in part, the reflection of a desire. SAP S/4HANA is, by market share, the dominant ERP in the global large enterprise segment. [1]

But the more closely you look at how this “for everything” works in practice, the more obvious the gap becomes between what the system solves and what teams need to do in their daily lives.

This article is not a technical analysis of SAP or a license comparison. It's an honest map of what SAP S/4HANA solves well, of what it wasn't designed to solve, and of what happens in the middle zone between the two categories.

An area that, according to IDC data collected by ERP News, can result in a loss of up to 20% of productivity in organizations that already have ERP in place. [7]

What is SAP S/4HANA and what was it designed for

SAP S/4HANA is the evolution of the old SAP ERP (R/3), built on the SAP HANA in-memory database. It was launched in 2015 as SAP's answer to the cloud environment and to the need to process large volumes of data in real time.

Unlike its predecessor, it consolidates data tables that were previously separate, allowing for faster processing speed and a more complete financial view, without the need for manual reconciliation between modules.

With more than 425,000 customers in more than 180 countries [6] and recognized as a leader in the Gartner Magic Quadrant for Cloud ERP [5], SAP S/4HANA is the reference system in sectors that require high financial complexity, global logistics, multi-country compliance and management of extensive supply chains.

It's not a solution for every company. Panorama Consulting classifies it as Tier I: designed for organizations with more than 750 million euros in turnover, multi-entity structures and international presence. [2]

SAP S/4HANA manages the financial and operational core with a depth that few systems can match.

The problem isn't what it does. It's the expectation that he will do everything. And that expectation—almost always—fails in processes where real business occurs outside of financial transactions.

What SAP S/4HANA Robustly Solves

The SAP S/4HANA architecture is based on five key pillars that explain its position in the market.

Real-time integrated finance

Financial accounting (FI), controlling (CO) and fixed asset management operate on a single database. This eliminates the need for reconciliation between the general ledger and operational records, a common problem in older ERP architectures.
In addition, multi-currency, multi-entity and multi-regulatory management (IFRS, GAAP, Spanish regulations) is incorporated as standard.

Global supply chain and logistics

The SAP modules for purchasing (MM), production planning (PP), warehouse management (EWM) and sales logistics (SD) represent decades of evolution in complex industrial environments. They are the standard in sectors such as advanced manufacturing, food, pharmaceuticals or automotive.

Regulatory compliance in multiple countries

SAP keeps its fiscal locations updated on an ongoing basis. In Spain, this includes the SII, VERIFACTU and the adaptation to the Create and Grow Act on B2B electronic invoicing.
For companies with an international presence, this legal coverage is a differential advantage compared to smaller ERPs.

Integration with the SAP ecosystem

SAP S/4HANA acts as the core of an ecosystem that includes solutions such as SuccessFactors (HR), Ariba (purchasing), Concur (expenses and travel) or EWM (advanced warehouses).
For organizations that need to cover multiple areas with integrated data, this ecosystem significantly reduces integration complexity.

Real-time analytics with SAP HANA

The ability to execute queries on large volumes of transactional data in real time—without having to move it to a data warehouse—is a key advantage for companies operating at a large scale.

Where SAP S/4HANA leaves real operational gaps

So far, SAP's marketing discourse. However, implementation data and user reviews show a different reality: even in organizations where SAP is properly implemented, there is a layer of daily operations that the system does not cover.

This layer ends up being solved with parallel tools that, in many cases, the IT department does not fully control.

Operational reporting that is left out of the standard module

The SAP reporting modules —Crystal Reports, SAP Analytics Cloud, BW/4HANA— are powerful, but are primarily designed for standard financial and logistics reporting.

Any customized view that crosses data from several areas—for example, a dashboard that combines production, material costs, and personnel availability—usually requires the intervention of an SAP consultant with knowledge of ABAP or the BW layer. The cost of this intervention ranges from 150€ to 350€ per hour, and the deadlines can be extended to weeks. [8]

The result is a well-documented pattern by Panorama Consulting and Aberdeen Group: teams export data to Excel and build their own dashboards. Every Monday morning, someone manually cross-checks information because the report you need doesn't exist in SAP.

Internal approval workflows with complex logic

SAP has workflow modules —such as SAP Business Workflow or SAP Business Process Management—. They exist. But configuring them to cover processes with real conditional logic — for example, a purchase request that requires approval by amount, conditioned by the supplier and with automatic scaling if there is no response within 48 hours — involves development in ABAP or configuration in SAP BTP.

It's not something a business user can do without technical support.

This gap explains why 77% of medium-sized companies — many of them with SAP in place — continue to manage their approvals via email, according to Aberdeen Group. Not that they are unaware that the native workflow exists, but that implementing it correctly has a cost that is not always feasible for each process.

Managing people beyond payroll

SAP SuccessFactors is SAP's answer to talent management. However, SuccessFactors and SAP S/4HANA are separate systems: they integrate, but do not form a single solution. And that integration requires specific configuration.

Beyond that, SuccessFactors covers the strategic talent cycle very well —recruitment, evaluation, training or workforce planning—but leaves out the daily operations of HR in environments with shifts or field work: managing schedules with an agreement logic, medical guards, industrial rotations or seasonal staff.

The market itself confirms this. The HCM segment was the fastest growing segment in 2024, with an increase of 14% year-on-year [1], a clear sign that operational management of people remains completely unresolved, even in organizations that already use SAP.

Non-transactional sectoral processes

SAP was designed around the order-invoice-collection cycle. Any process that doesn't fit into that central flow—such as managing files in a certification authority, scheduling audits, monitoring publishing projects, or the approval cycle for an insurance claim—is beyond its native scope.

SAP offers industry solutions, such as IS-H for healthcare or IS-Retail for retail. However, its implementation requires specialized consulting and its adoption in the Spanish mid-market is limited due to the cost.

The healthcare sector illustrates this point well. Despite the fact that SAP has more than 1,000 hospital facilities globally [6], the healthcare ERP market — which reached 7.420 million dollars in 2023 and continues to grow [9] — does so precisely because, even in hospitals with SAP implemented, operational clinical management, scheduling of healthcare personnel and integration with HIS systems require complementary solutions.

Agile integration with heterogeneous systems

81 percent of global IT leaders say that data silos block their digital transformation initiatives. [4]

SAP has APIs and SAP BTP (Business Technology Platform) to address this problem, but both require advanced technical capabilities. Integrating SAP with a third-party CRM, an ecommerce platform or an industry system is not a plug-and-play process, but a project with its own cost and time frame.

The question any organization with SAP should ask

The study by Deloitte and the TUM School of Management on the future of ERP up to 2030 summarizes it clearly: 55.5% of respondents believe that ERPs will be a decisive competitive factor, but 68.8% indicate that the adoption of cloud, AI and automation will be key to their evolution. [3]

In other words, SAP S/4HANA is the starting point, not the destination.

The question is not whether SAP solves the financial core of the organization—which it usually does—but rather what happens to that 20% of the operations that it was not designed to cover, and at what cost it is being solved today in time, errors and manual processes.

Customizing SAP to cover these gaps can cost between 150,000 and 750,000 euros, with terms of 3 to 18 months. [8]

The alternative is not to replace SAP, but to complement it with satellite tools that cover these processes in 4 to 6 weeks, without modifying the central system.

This approach—ERP as the core and specific tools for operational gaps—is what Gartner and Forrester describe as a composable architecture. It's not a future trend: it's the model that the most efficient organizations are already operating with.

Bibliographic references

Methodological note: all statistics have been verified in the original sources before inclusion. The numerical citations in superscript [N] refer to the APA references listed below.

[1] Gartner. (2024). Market Share Analysis: ERP Software, Worldwide, 2024. Gartner Research, Doc. #6654134. https://www.gartner.com/en/documents/6654134 — The global ERP market reached $66 billion in 2024 (+11.3%). Oracle and SAP lead the Cloud ERP market for service companies; Oracle, SAP, Microsoft, Infor and Epicor lead in product companies.

[2] PanoramaConsulting Group. (2024). The 2024 ERP Report. Panorama ConsultingGroup. https://4439340.fs1.hubspotusercontent-na1.net/hubfs/4439340/Reports/ERP%20Report/2024-erp-report-panorama-consulting-group.pdf — Tier classification: SAP S/4HANA in Tier I for companies >$750 million. Median implementation: 750 employees and $200.5 million in turnover. 80% of the mid-market (100—999 employees) have ERP in place.

[3] Deloitte & TUM School of Management. (2024). The Future of ERP: A Study on the Challenges and Opportunities of ERP Systems by 2030. Deloitte /Technische Universität München. https://image.marketing.deloitte.de/lib/fe31117075640474771d75/m/1/147c324b-c7f5-4884-b3f7-06cf12247406.pdf — 55.5% believe that ERPs will be a decisive competitive factor in 2030; 68.8% say that Cloud/AI/RPA will be significantly relevant to ERP in 2030.

[4] MuleSoft/ Deloitte Digital/Vanson Bourne. (2024). Connectivity Benchmark Report 2024. https://www.deloitte.com/za/en/services/consulting/perspectives/2024-connectivity-benchmark-report.html — 81% of IT leaders say that data silos block their digital transformation initiatives. The average company manages more than 900 applications, of which only 28% are integrated.

[5] Deloitte. (2024). Gartner Magic Quadrant for Cloud ERP Services 2024 (Deloitte recognized as a leader). Deloitte Global. https://www.prnewswire.com/news-releases/deloitte-recognized-by-gartner-magic-quadrant-and-critical-capabilities-for-cloud-erp-services-for-a-second-consecutive-year-302326348.html — Deloitte scored the highest score in the 'SAP-based Implementation and Evolution' use case in the Gartner Critical Capabilities for Cloud ERP Services 2024.

[6] SAVE. (2025). SAP Announces Q4 and FY 2024 Results. SAP SE Investor Relations. https://www.sap.com — SAP has more than 425,000 customers in more than 180 countries. SAP S/4HANA has more than 1,000 hospital installations worldwide, based on data from the SAP Healthcare ecosystem.

[7] ERP News. (2024). Electronic Workflow Process Gaps Kill an Estimated 20% of ERP Productivity. ERP News. https://erpnews.com/electronic-workflow-process-gaps-kill-an-estimated-20-of-erp-productivity/ — Workflow gaps between what ERP manages and what teams need destroy 20% of productivity in organizations that already have ERP in place.

[8] Panorama Consulting Group. (2024). 2024 Top 10 ERP Systems Report. https://4439340.fs1.hubspotusercontent-na1.net/hubfs/4439340/Reports/Top%2010%20ERP%20Systems/2024-top-10-erp-systems-report-panorama-consulting.pdf — Tier I (SAP S/4HANA, Oracle Fusion, Infor Cloud Suite) for companies > $750 million; customization cost for medium-sized companies: between $150,000 and $750,000, with terms of 3 to 18 months.

[9] GrandView Research. (2024). Healthcare ERP Market Size, Share & Trends Analysis Report, 2030. https://www.grandviewresearch.com/industry-analysis/healthcare-erp-market-report — The global market for ERP for health was 7.420 billion dollars in 2023 and is projected to reach 11.96 billion in 2030 (CAGR 7.2%). The finance and billing segment dominates with 32% of the market.