The Vendor Onboarding Backlog Isn’t a Staffing Problem
They’re a Process Problem
When vendor onboarding requests are piling up faster than your AP team can process them, the instinct is to hire. Throwing bodies at the problem will never solve the heart of the issue.
The vendor onboarding challenges most AP and procurement teams face aren’t caused by a shortage of people. They’re caused by a process that requires too much human involvement at every step. Adding more people to a broken process doesn’t fix the process. It just means more people to managing amid the chaos.
This page covers the specific vendor onboarding challenges that create backlogs, why they compound over time, and what can actually resolves them.
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Why Vendor Onboarding Challenges Are Getting Harder to Manage
The volume of vendor relationships most organizations maintain has grown. Supply chain diversification, increased use of contingent labor, and the shift toward more vendor relationships of shorter duration all contribute to a higher steady-state volume of new vendor onboardings and updates.
Yet, the process most organizations use to manage that volume hasn’t kept up. Your process was likely designed for a lower-volume environment, with manual steps that made sense when a new vendor was an occasional event. With increased volumes, following the same steps create a structural bottleneck.
The result is a backlog that’s not a temporary problem to clear but rather a permanent condition. And the downstream effects extend beyond the AP team.
The Specific Vendor Onboarding Challenges That Create Backlogs
Vendor onboarding challenges don’t usually have a single cause. They compound. But they tend to start in the same places.
Unstructured information collection. When vendors are asked to submit their information on a pdf form through email, the results are unpredictable. Some vendors send everything correctly the first time. Most don’t. Missing fields, wrong document formats, information submitted in the wrong order — each gap requires a follow-up, which extends the timeline and adds to the queue.
Chasing documentation. W-9s that weren’t attached. Bank letters that were sent as a photo from a phone. Insurance certificates that have expired. Every missing or incorrect document requires outreach, a waiting period, and a follow-up if the vendor doesn’t respond. Multiply this across dozens of active onboardings, and chasing paper becomes a full-time job.
Manual authentication steps. A thorough vendor onboarding process includes authentication of tax IDs and bank account ownership, and sanctions screening. In a manual process, each of these steps requires a human action: logging into a tool, running a check, and recording the result. When the team is running behind, these steps get deferred or skipped. When they get skipped, risk accumulates.
Data entry bottlenecks. After documentation is collected and authenticated, someone has to enter it into the ERP. That step requires time, accuracy, and the right system access. It’s also the step that most directly ties vendor activation to the AP team’s current capacity — which means vendor activation speed is directly constrained by how busy the team is with everything else. And how quickly, and accurately, someone can type.
Approval routing delays. New vendor records typically require sign-off from approvers in finance, procurement, or both. In a manual process, that routing happens through email or an informal request. Approvers are busy. Requests get delayed. Vendors wait.
Change request volume. Existing vendor onboarding challenges are compounded by the ongoing volume of change requests: vendors updating banking details, addresses, contact information, tax status. Each change request requires the same process steps as an initial onboarding — documentation, authentication, data entry, approval — and often gets lower priority, which means it falls further behind.
How These Challenges Compound
Each vendor onboarding challenge creates drag on the next one. When the AP team is behind on data entry, new documentation sits in a queue waiting for entry. When the documentation queue grows, authentication steps get deferred. When authentication is deferred, the vendor can’t be activated. When the vendor can’t be activated, the department that needed them starts asking for status updates.
Status update management becomes its own workload. The AP team is now spending time explaining to business stakeholders why vendors aren’t activated yet, fielding escalations from department heads, and manually tracking where each vendor is in the pipeline. None of this improves outcome. It reduces it.
The organizational cost extends beyond AP. Vendors who are waiting for activation aren’t delivering services. Projects that depend on vendor relationships get delayed. Supplier relationships take damage when vendors can’t get paid on time because the onboarding process hasn’t completed. In some cases, vendors who’ve had a poor onboarding experience are reluctant to work with the organization again.
Why Hiring More People Doesn’t Solve It
More AP staff might increase the throughput of manual steps. It won’t change the fact that the steps are manual.
If each new vendor onboarding requires 45 minutes of AP team time across documentation chasing, data entry, authentication, and approval routing, adding a second person doubles your capacity. The backlog clears — until volume increases again. And volume tends to increase.
The ceiling on a manual process is determined by the number of people running it. The ceiling on an automated process is effectively unlimited. The sustainable fix to vendor onboarding challenges isn’t more people doing the same manual work. It’s removing the manual steps that don’t require human judgment in the first place.
What Resolving Vendor Onboarding Challenges Actually Looks Like
The organizations that have cleared their vendor onboarding backlog — and kept it clear — have made the same structural change: they shifted the labor of onboarding from the AP team to the vendor.
When vendors complete their own information through a structured workflow, the AP team stops chasing documentation. When authentication runs automatically, the team stops managing individual check steps. When approvals route through a defined workflow, the email back-and-forth stops.
What remains for the AP team is managing the exceptions: the vendors who didn’t complete the process, the records that need a second look, the flags that require human review. That’s a fraction of the workload, and it’s the fraction that benefits from human attention.
The backlog doesn’t clear because the team works faster. It clears because the process stops requiring humans to do repetitive, error prone, manual tasks.
How PaymentWorks Addresses Vendor Onboarding Challenges
PaymentWorks is a vendor identity platform that shifts vendor onboarding from an AP-driven manual process to a vendor-driven automated one. Vendors complete their own onboarding through a guided workflow. Documentation is collected in structured form. Authentication runs automatically. Approvals route through a defined workflow with visibility into status at every stage.
The AP team’s role becomes oversight and exception management, not execution of every step.
For organizations managing high volumes of new vendor onboardings, vendor data changes, and ongoing relationship updates, this is the difference between a process that keeps up and one that doesn’t.
The Question Worth Asking
Before the next budget conversation about AP headcount, ask: how many hours per week does your team spend on steps that could run without them?
That number — not your vendor volume — is what determines whether you need more people or a better process.