Why 80% of Factory Mergers Edge Close to an IT Crash in 2026 (and how to escape it)

In an industrial landscape marked by record consolidation in 2025 and 2026, confirmed by economic briefings from GIFAS (Groupement des Industries Françaises Aéronautiques et Spatiales), external growth strategies have become an absolute weapon. For tier 1 and tier 2 equipment manufacturers, cutting-edge subcontractors (Aerospace, Space, Defense, Automotive) or specialists in materials and testing, acquiring production sites or design offices is the fastest way to gain market recognition and keep pace with the relentless production rates imposed by major aerospace and defense clients.

However, as soon as the champagne glasses are cleared away, operational reality strikes hard. The group finds itself at the head of a digital "patchwork": a mosaic of tools where competing ERPs, siloed PLM solutions, and obsolete quality management software (QMS) coexist. Without a proactive and striking IT convergence strategy beforehand, the synergies promised to investors collapse, giving way to organizational silos that threaten overall profitability.

1. ERP, PLM, Quality: The Incompatible Trio Secretly Sabotaging your M&A Profitability

The lack of alignment between the three pillars of the industrial IT system does not just slow down the company: it actively paralyzes the value chain, a critical blind spot as the industry faces historical delivery targets.

• Siloed ERPs: Total Operational Opacity

Each acquired entity clings to its legacy ERP. The result? The group operates blindly. It is impossible to get a consolidated view of inventory, multi-site production capacities, or to optimize procurement. Planning processes (Sales & Operations Planning / Master Production Schedule) slip back onto Excel files, creating total opacity and ruining Supply Chain agility in the face of the strict on-time delivery requirements of major clients.

• A Broken Digital Thread: Is Production Profitability at Risk?

In high-precision engineering, digital continuity is a matter of survival. When PLM tools do not converge, central R&D and remote factories work from different blueprints. An essential technical modification (Engineering Change Order) approved at headquarters takes weeks to trickle down to a subsidiary's production ERP. As a result, obsolete parts are machined. Money goes straight to the scrap heap in the form of costly scrap.

• Fragmentation of Quality: The Hazard of Non-Compliance

In highly regulated sectors (EN 9100, IATF 16949 standards), a gap in traceability is equivalent to a business death sentence. The lack of a unified quality system turns the management of non-conformities and audits into an obstacle course. Quality control data is scattered across local servers or paper, exposing the group to critical risks during customer or regulatory audits.

In the face of such peril, urgency often pushes people to want to standardize everything at once. Yet this is where the trap lies.

The technical observation: Imposing a single ERP or PLM in "Big Bang" mode right after an acquisition is the best way to cause an operational stroke. It paralyzes factories for months and destroys precisely the value and agility that you had just purchased.

2. Bugs, Scrap, and Delivery Delays: The Painful Truth About Data Chaos

To measure the extent of the damage, here is how systems heterogeneity silently blocks the vital data flows of your production sites:

1. Blockage of Master Data (Parts and Bill of Materials)

The major malfunction lies in the double, or even triple, manual data entry between the group PLM and local ERPs, due to the lack of common codification. 

The cash impact on your business is immediate: inconsistent databases make volume purchasing of raw materials completely impossible. You draft away all the scale effects that the acquisition was initially intended to bring you.

2. The Drift of Technical Changes (ECO / ECR)

Without any interconnected workflow, teams are reduced to sending new drawings by email or via shared folders. This malfunction kills efficiency by creating maximum risk: that of manufacturing non-compliant products based on outdated versions. As a result, the Time-to-Market of innovations skyrockets and margins collapse under the weight of scrap.

3. The Break in Production Tracking and Traceability

Here, the problem comes from the local MES (Manufacturing Execution System) or local quality tools, which are completely disconnected from the heart of the central ERP. The business impact is critical: product history becomes incomplete. If a product batch anomaly occurs, the lack of visibility turns crisis management into an ordeal, multiplying by ten the time required to identify and correct the problem.