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Fintech · Service design 2025 Lead Product Designer

Transaction declines: turning confusion into clarity.

Across 40 million monthly transactions, declines were the number one NPS detractor. The systems were messy, the rules were strict, and the humans on the other side were often stressed. The fix had to land everywhere the decline did: product, comms, call center, and the boardroom.

— Outcomes
40M+ Monthly transactions in scope.
#1 NPS detractor, clarified and reframed.
Journey briefed to the bank president.
— Challenge

"Why didn't this go through?"

Declines are small individually and enormous in aggregate. Every month tens of millions of transactions didn't complete, and every unexplained decline was a moment where a member didn't trust the product, or in some cases, didn't trust the bank. Customer care was absorbing the overflow; the product, the app, and the call scripts were telling members three different stories.

Worse, the internal explanation of "why" was distributed across fraud systems, payment networks, issuer rules, and member account state. No one team had the whole picture. That gap between systems and explanation was where member trust was leaking.

— Approach

Service design across the whole journey.

This was not a screen-level problem, so I didn't start with screens. I mapped the full service: the moment of the decline, the push notification, the app message, the call to care, the written follow-up. At each touchpoint I asked what the member knew, what the business knew, and what the system could actually say.

On the research side I synthesized quantitative decline reason codes with qualitative interviews. The quant told us which reasons were dominant; the qual told us how members were interpreting each one, and it rarely matched.

A decline is not a transaction outcome. It's a service moment with a specific person on the other side of it.

The journey that came out of synthesis was briefed to the bank president, not just to the product team. The cross-functional scale of the fix required organizational sign-off to move, and putting the real member journey in front of leadership was the unlock.

— Design

Same decline, legible explanation.

The redesign rebuilt the explanation layer around what the member actually needs in the moment: what happened, what it means for them, what they can do next, and where to go if the answer isn't enough.

  • Reason codes collapsed into a plain-language taxonomy members and care could share.
  • Push, app, and written follow-up aligned to tell the same story, sequenced to the member's likely emotional state.
  • Self-service paths where the decline was something the member could actually resolve (e.g., temporary holds, limit changes).
  • A warm handoff to care when the decline's cause required a human conversation, with context pre-loaded for the agent.
— Artifacts produced

What the engagement left behind.

A declines problem is a cross-functional problem. Every artifact was designed to travel: product, fraud, care, comms, and the executive team could each pick one up and use it.

01

Full-journey service blueprint

From the moment of the decline through the resolution, across every channel the member hears from. Annotated with owners, systems, and gaps.

02

Decline-reason taxonomy

Back-office codes collapsed into a plain-language set members and care agents could both use. The shared vocabulary the program now runs on.

03

Quant + qual synthesis

Dominant reason codes mapped to how members were interpreting each one. Where the two didn't match is where the redesign focused.

04

President's brief

The executive-level walk-through of the real member journey. Unlocked the cross-functional investment the fix required to move.

05

Aligned message system

Push, in-app, written follow-up, and care scripts sequenced to tell one story at the member's emotional pace, not the system's.

06

Self-service resolution paths

Member-resolvable decline paths (temporary holds, limit changes) with a warm handoff to care where a human conversation was actually needed.

— Outcome

Clarity at the scale of the problem.

The declines experience was reframed from a support liability into a service pattern the bank could improve deliberately. The service map became shared language across product, fraud, care, and comms. The president's brief secured the cross-functional investment required to carry the work beyond a single ship.

— Previous case

Zelle: from compliance risk to best-in-class.

— Start a conversation

Tell me about the system you're trying to make clearer.

— Email
anarosa.lerma@humansystemsstudios.com

Best for project inquiries, scoping conversations, and workshop requests. I answer within two business days.

— Book a call
30 minutes, Calendly

A low-pressure intro call. Bring the system you're stuck on; I'll bring questions.