Vendor performance often breaks down—not because the supplier failed, but because internal teams didn’t set expectations that support timely execution. In the fast-moving world of glass fabrication or refractory delivery, success depends on how well internal SLAs (Service Level Agreements) are aligned to vendor workflows.
Why Internal SLAs Matter
They create accountability before a PO ever reaches the vendor
They ensure sourcing, approvals, and freight coordination move in sync
They reduce last-minute chaos that forces vendors into premium freight or missed deadlines
Common SLA Pitfalls
Delays in releasing POs after pricing is agreed
Lag between forecast updates and material requisitions
Unclear cutoffs for design finalization on custom SKUs
Slow AP cycle times that erode vendor goodwill
How to Set Internal SLAs That Drive Vendor Success
Time-to-PO SLA:
Define how fast procurement must issue a PO once terms are finalized (e.g., within 48 hours).
Forecast Update Cadence:
Ensure planning sends 13-week rolling forecasts weekly to procurement and vendors.
Change Order Lock Windows:
Set a firm deadline for customer or engineering changes to specs.
Invoice Approval Timing:
AP must process standard vendor invoices within 10 days to maintain payment commitments.
Vendor Communication SLA:
Procurement responds to vendor queries within 1 business day.
Final Word
Internal discipline breeds external reliability. The best vendor performance begins inside your own four walls.
