The Notice You Never Received 

Why end-of-life information reaches the wrong people at the wrong time

The end-of-life notice arrived on time. The OEM issued it fourteen months before the component reached end-of-support. The document listed the affected part numbers, the last-time-buy deadline, and the recommended alternatives. It was sent to every registered procurement contact in the OEM's system. 

It landed in a procurement inbox. It was categorised as vendor communication, filed alongside price updates and catalogue revisions. Nobody flagged it. Nobody forwarded it to the maintenance team. The engineering group never saw it. 

Fourteen months later, a drive controller failed on the main production line. The work order was opened, the spare parts list consulted, and the component marked as sourceable. By the time procurement checked, the European distributor had sold its remaining stock three months earlier. The last-time-buy window had closed six months ago. 

The nearest alternative was a grey market unit of uncertain provenance. The OEM-recommended replacement required a firmware update that the maintenance team didn't have credentials to perform. The only qualified supplier had a four-week lead time. 

The notice was real. The deadline was accurate. It arrived in time to act on it. It reached nobody who could. 

What information exists and where it comes from

OEMs communicate product lifecycle events through several structured channels. Product Change Notifications (PCNs) cover specification changes, component substitutions, and manufacturing location moves. End-of-life announcements state the date after which a product will no longer be manufactured. Last-time-buy notices define the window within which customers can place final stock orders. Some OEMs issue product discontinuation warnings years in advance; others give six months. 

For industrial automation components, PLCs, drives, HMI panels, sensors, safety relays, most major manufacturers (Siemens, ABB, Schneider Electric, Rockwell, Omron, Phoenix Contact) maintain searchable product lifecycle databases and send direct notifications to registered contacts. 

This information is not buried. It exists, it is structured, and for components you depend on, it has a hard deadline attached. The problem is not that it doesn't arrive. The problem is who it arrives to. 

Why it reaches the wrong people

The contacts in the OEM's database are the procurement team and the key account manager. These are the people who negotiate purchase orders, manage the commercial relationship, and process invoices. They are registered because they own the supplier account. 

They do not have the machine knowledge to interpret whether the notice matters. When a PCN arrives listing twelve part numbers, they have no way to assess which of those are in the installed base, which are in the critical spare parts list, which have a six-month alternative sourcing lead time, and which have no qualified alternative at all. They file the notice and continue, because there is no process telling them to do anything else. 

Maintenance has that knowledge. They know which components are critical, which have failed before, which are single-source, which sit inside a safety-classified assembly where a substitute requires recertification. They are not in the OEM's notification channel, because they are not the ones who signed the procurement agreement. 

The result is a structural disconnect that is not the fault of either team. Procurement is doing its job. Maintenance is doing its job. The information flow between the two, for the specific purpose of lifecycle management, does not exist. 

Why even when it arrives, nothing happens

In plants where the notice does reach maintenance, either forwarded by a careful procurement colleague or picked up during a supplier review, the most common outcome is still no action. 

The reason is not indifference. It is the absence of a defined process. 

When the maintenance manager receives an EOL notice, several questions arise immediately. Is this component in our current installed base? Is it on our critical spare parts list? Do we have stock, and if so how much? How long will that stock last given the failure history? How much would we need to buy to see us through to the next planned replacement or modernisation of the machine? 

None of these questions have quick answers unless the groundwork has already been done. The spare parts list may not reflect the current installed configuration, which is the gap the previous article in this series addressed. The criticality assessment may be out of date or non-existent. The planned replacement schedule for the machine may not be formally documented, or may exist only in the capital planning process that maintenance doesn't have visibility into. 

The notice that requires a decision lands with someone who cannot make the decision, because the information needed to make it doesn't exist in usable form. It gets deferred. The window closes. 

What "too late" looks like in practice

The window between an end-of-life announcement and a last-time-buy deadline is typically six to eighteen months for industrial automation components. For common mechanical parts and standard electrical items, it can be shorter. For low-volume, application-specific, or legacy components, it can be longer, but the alternatives in those cases are also scarcer and more expensive. 

Once the window closes, the options narrow sharply. 

Grey market sourcing

Parts sourced from secondary distributors, sometimes with unknown storage history, no OEM warranty, and no guarantee of firmware or hardware compatibility. For safety-classified equipment, grey market parts may violate certification requirements and create liability exposure that most plants are not prepared to manage. 

Qualifying an alternative

Parts from a different manufacturer with equivalent specifications require technical assessment, sometimes re-commissioning, and in some cases software adjustment. If this is planned, it is manageable. Under production pressure with a machine already down, it is not. 

Redesign

Replacing the obsolete component with a current-generation equivalent that requires mechanical, electrical, or software changes. This is a project with its own engineering scope, budget, and lead time. In most plants, it was not in the CAPEX plan. 

Continued operation with known risk

Keeping the machine running with no spare, accepting that the next failure means an unplanned stop of unknown duration. This is often the default outcome when everything else moves too slowly. 

None of these outcomes is inherently catastrophic. All of them are substantially more expensive, more disruptive, and harder to explain to operations management than acting within the EOL window would have been. 

What actually needs to change

Solving this does not require a reorganisation. It does not require a new system, a new function, or a capital budget. In most plants, it requires three things to be defined and then actually communicated to the people involved. 

A named recipient with a defined action

Someone in the organisation needs to be the designated receiver of OEM lifecycle communications: PCNs, end-of-life notices, last-time-buy announcements. This does not need to be a new role. It can be the maintenance planner, a senior reliability engineer, or anyone with machine knowledge and enough technical context to assess relevance. What matters is that this person is registered with the relevant OEMs and distributors, and that receiving a notice carries a clear obligation: within a defined number of days, verify whether the component appears in the installed base or critical spare parts list, and flag if it does. 

A filter that separates signal from noise

OEMs issue hundreds of product changes annually. Not all are relevant. The filter should be simple: does the affected component appear in our installed base or critical spare parts list? If yes, it enters a review. If no, it is filed. Without this filter, the volume of notifications becomes an argument for ignoring them entirely, which is what currently happens in most procurement inboxes. 

A defined decision path

When a relevant notice is identified, someone needs to own the decision: buy lifetime stock, qualify an alternative, or plan a controlled replacement within a defined timeline. This decision involves maintenance for machine knowledge and criticality assessment, procurement for sourcing options and cost, and operations for input on production impact. If the path to that decision is not defined in advance, the notice circulates until someone files it or the deadline passes. 

Most plants have none of these three in place. The information is arriving. The time to act exists. The process to convert information into action does not. 

What you can do this month 

Without a project, without a budget request, without waiting for IT or organisational approval. 

Start with the OEM registration gap. Identify the six to ten most critical automation components on your highest-criticality production line. Go to each OEM's website and check whether your organisation has a registered technical contact for lifecycle notifications, separate from the procurement contact. If not, register someone from maintenance or reliability. For most OEMs, this takes an afternoon and requires only a company email address. 

Then check the lifecycle status of those components. Most major OEM websites have a searchable product lifecycle database. Look up each component and note its current status: active, mature, end-of-life announced, or discontinued. This is information you almost certainly do not have in your CMMS, and it changes without warning. 

The output is a short list of components with known lifecycle exposure and, where applicable, a deadline to act. That list is the starting point for a structured spare parts review: how much stock do you need, how long do you have to source it, and what happens if you don't. 

This is not a comprehensive obsolescence programme. But it is the first concrete step, and it is one that most plants have not taken for components they assume are still current because nobody has told them otherwise. 

Want to go further?

If you want to assess the lifecycle exposure across your full critical spare parts list, not just spot-check it, Operivo offers a focused spare parts lifecycle review. It covers installed base verification, OEM lifecycle status mapping, criticality-based prioritisation, and last-time-buy window analysis. Typical engagement: two to three days on site, one structured output with a prioritised action list. 

Contact us to discuss your situation.