Sub-function
S2P Control Tower
Owns invoice work end to end inside AI GBS & Global Business Services. Runs 4 lines across 24 stations, drains the repeatable share into the S2P tower, and holds 4 human gates.
Estate rating
A
79 / 100
Three-way match and invoice capture are the most mature agentic transactions in the enterprise. Bank detail changes hold a human gate — that is where the fraud is.
Agents
12
Lines
4
Units / wk
20,386
Timetable vs actual
13.0h → 12.8h
Cost / unit
$7.48
was $27
Run-rate saving
$20.6M
annualized at this volume
The 12 agents running this sub-function
Grouped by what they are for, not by where they sit. The agent org is process-shaped.
Source-to-Pay Tower Orchestrator
Owns the s2p control tower lane end to end. Sequences the other agents, holds the timetable, and decides what surfaces to a human.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
Requisition Validation Agent
Runs the repeatable portion of s2p control tower inside the shared transaction spine at spine cost and spine controls.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
Invoice Capture Agent
Runs the repeatable portion of s2p control tower inside the shared transaction spine at spine cost and spine controls.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
Payment Run Agent
Runs the repeatable portion of s2p control tower inside the shared transaction spine at spine cost and spine controls.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
PO Issuance Agent
Executes the s2p control tower step it owns, posts its evidence, and hands the unit to the next stage.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
Goods Receipt Agent
Executes the s2p control tower step it owns, posts its evidence, and hands the unit to the next stage.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
Three-Way Match Agent
Executes the s2p control tower step it owns, posts its evidence, and hands the unit to the next stage.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
Exception Resolution Agent
Executes the s2p control tower step it owns, posts its evidence, and hands the unit to the next stage.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
Supplier Master Agent
Executes the s2p control tower step it owns, posts its evidence, and hands the unit to the next stage.
ceiling A4 · escalates to Escalates to Tower Lead, Source-to-Pay when the unit falls outside the decision envelope or confidence drops below the floor.
Duplicate Payment Agent
Holds the rules that bind every other agent in s2p control tower. Versions them, tests them against live decisions, and blocks work that breaches them.
ceiling A4 · escalates to Escalates on any decision that would breach a live policy version, with the clause cited.
S2P Control Agent
Holds the rules that bind every other agent in s2p control tower. Versions them, tests them against live decisions, and blocks work that breaches them.
ceiling A4 · escalates to Escalates on any decision that would breach a live policy version, with the clause cited.
S2P Control Tower Challenger Agent
Adversarial reviewer for s2p control tower. Argues the opposite case on every position and flags where the evidence does not carry the claim.
ceiling A4 · escalates to Escalates when a ratified position is still running against a break condition it flagged.
Estate rating breakdown
Seven control dimensions. Judgment readiness runs against autonomy on purpose.
People
What the humans stopped doing, and what they do now.
Redeployed into customer-facing escalation ownership.
Lines running in this sub-function
Each line is a workflow. Click a line to walk it station by station.
Strategy positions this sub-function holds
An agent that only executes is a robot. These are the calls it made, the argument against each one, and what would prove it wrong.
S2P Control Tower Operating Position
In challengev1Should invoice work stay in the shared transaction spine, or come back inside the function where the context lives?
Hold the ceiling at A4 for s2p control tower. Three-way match and invoice capture are the most mature agentic transactions in the enterprise. Bank detail changes hold a human gate — that is where the fraud is. Raise it only after two consecutive quarters where the override rate stays under five percent and every override has a written cause.
confidence
66%
The challenge — S2P Control Tower Challenger Agent
S2P Control Tower Challenger Agent argues the recommendation leans on 3 quarters of data from a period with no volume shock. The confidence band overlaps the alternative, and the position does not say what it would take to be wrong. Recorded as a dissent, not a block.
Break conditions
- ·Override rate rises above 9 percent for two consecutive months
- ·Cost per invoice stops falling while volume keeps rising
- ·A control failure in this lane reaches a customer or a regulator
Evidence gaps
- ·No external comparator on a like-for-like unit definition
- ·Exception cases under $21k are sampled, not fully measured
| Alternative considered | Cost | Risk | Verdict |
|---|---|---|---|
| Hold the current position | $571k run rate | Known and priced. Cedes ground if comparators move faster. | live |
| Raise the ceiling one level now | $1134k to build controls | Override rate is 4 percent; raising the ceiling before that settles imports the error into production. | rejected on evidence |
| Move the exception tail to the spine | $581k transition | Loses local context. Rework risk on the cases that are hardest to recover. | under review |
Policy register
The rules the agents above are bound by. Version, owner, approver, and the agents each rule constrains.
| Ref | Rule | Scope | Owner agent | Approved by | Version | Status |
|---|---|---|---|---|---|---|
| GB2-POL-200 | S2P Control Tower Decision Envelope Agents in this lane may act without a human when the invoice sits inside the stated value, risk and confidence envelope. Outside it, the unit holds at a gate with a named approver and a running clock. binds 6 agents · APAC | envelope | Duplicate Payment Agent | Tower Lead, Source-to-Pay | v1.4 | Active |
| GB2-POL-201 | S2P Control Tower Evidence Standard Every autonomous decision writes inputs, the rule version applied, the model and prompt version, the output and a reversal path. An action with no evidence record is treated as a control failure, not a fast decision. binds 6 agents · Global · EU | evidence | Duplicate Payment Agent | Tower Lead, Source-to-Pay | v1.2 | Active |
| GB2-POL-202 | S2P Control Tower Escalation Rule Escalation is mandatory when confidence falls below the floor, when two options sit inside the confidence band, or when a break condition on a ratified position fires. Tower Lead, Source-to-Pay owns the response clock. binds 6 agents · EU · UK | escalation | Duplicate Payment Agent | Tower Lead, Source-to-Pay | v2.2 | Active |
| GB2-POL-203 | S2P Control Tower Autonomy Ceiling The ceiling for this lane is 93 on the platform scale. Three-way match and invoice capture are the most mature agentic transactions in the enterprise. Bank detail changes hold a human gate — that is where the fraud is. The ceiling is a governance decision, not a technical limit, and only Tower Lead, Source-to-Pay can propose moving it. binds 6 agents · US · Canada | ceiling | Duplicate Payment Agent | Tower Lead, Source-to-Pay | v4.1 | Active |