
A small currency error and unnoticed breakdown in conversion tracking can quickly turn into unnecessary expenses.
On PPC Live The Podcast, I had the opportunity to chat with Pete Bowen, a seasoned Google Ads expert with a keen focus on B2B lead generation.
Pete shared that throughout his career, he learned two pivotal lessons: never neglect the fundamentals, and don’t assume everything around your ads is functioning perfectly just because the campaign appears fine.
The Currency Mistake That Cost 10 Times the Budget
In our discussion, Pete recounted an incident where a South African client’s account was mistakenly set to the UK currency, leading to a spend ten times higher than planned. Initial results looked impressive, but the oversight eventually set unrealistic expectations and cost the client relationship.
Why Checklists Protect PPC Teams
The lesson here is to incorporate learning into a formal process. For instance, implementing a currency check in initial setups can transform frustrating mistakes into reliable, repeatable safeguards.
The Bigger Problem: System Decay
Beyond errors in setup, Pete discussed a more insidious issue: “system decay.” This involves the gradual breakdown of the infrastructure linking ads, tracking, CRM, and sales processes, often without detection.
Why Conversion Data Failures Hurt Performance
If conversion data flow is disrupted, Google’s algorithms miss out on critical optimization feedback, resulting in reduced spending, declining performance, or campaigns that seem to halt unexpectedly.
PPC Managers Need to Look Beyond the Interface
A common error among advertisers is focusing solely on Google Ads. Optimal performance involves the whole journey, from click to conversion to revenue, and any disruption can diminish results.
What to Do When Conversion Tracking Breaks
Priority number one is identifying and fixing the root of tracking failure quickly. Leveraging data exclusions to prevent poor data from affecting optimization is crucial, as is implementing monitoring systems to catch recurring issues early.
The Danger of Optimising for Clicks
Pete highlighted another frequent mistake: prioritizing clicks over outcomes. Without effective conversion tracking, advertisers might end up with significant traffic that yields few leads or sales.
Why Performance Max Needs Strong Tracking
Automation tools like Performance Max can exacerbate this issue if they receive misleading signals. Accurate conversion data is essential before making the most of automated tools.
Why Bid Strategies Need Guardrails
Google’s powerful bidding systems optimize based on the success criteria provided by advertisers. Clear objectives, reliable data, and sensible constraints like CPC limits are needed to prevent extreme results.
Testing AI Features Carefully
With new AI tools, the risk isn’t of premature testing, but of testing without clearly defined success metrics. Beyond just impressions and clicks, the focus should be on impacting qualified leads, sales, and overall revenue.
The Problem with “Always Be Testing”
Pete also challenged the constant testing philosophy. Many accounts lack the data volume to effectively run small tests, so energies are often better directed towards strengthening core practices than chasing minor improvements.
The Key Takeaway
The overarching lesson is that mistakes are valuable if they lead to robust systems. Each error should translate into a checklist, a monitoring strategy, or a preventive measure to ensure it doesn’t recur.
Inspired by this post on Search Engine Land.





























