Service GB2A
Requisition to PO
Runs transactional. Starts when a scheduled window opens. It runs 2,712 times a week across 6 stations. One of those stations stops for a person and 5 are done by an agent, 5 of them on the shared spine.
Runs a week
2,712
108 in flight right now.
Stations
6
1 person · 0 agent · 5 spine
Agent share of steps
83%
Autonomy on this service is set at 85% against a ceiling of 93%.
Decisions a person makes
1
Held by Tower Lead, Source-to-Pay.
Touchless
90%
Share of runs that complete without anybody opening them.
Timetable against actual
21.9h
Actual 26.4h, 4.5h over the timetable.
Operations
The lane diagram
Read it left to right. more
Operations
Every station in order
The same stations as a list, with the dwell the estate records against each one and the system a station of that shape would touch.
| # | Station | Lane | Who | Layer | Dwell | Target | In flight | System |
|---|---|---|---|---|---|---|---|---|
| 1 | Requisition | GBS | Requisition Validation Agent | gbs | 17m | 31m | 16 | Group ERP — Financials |
| 2 | Policy check | GBS | Requisition Validation Agent | gbs | 3h 5m | 7h 14m | 24 | Group ERP — Financials |
| 3 | Budget check Hands over at finance | GBS | Requisition Validation Agent | gbs | 3h 7m | 3h 48m | 25 | Group ERP — Financials |
| 4 | Approve Held for a named human when the unit exceeds the invoice decision envelope, when confidence falls below the floor, or when a policy clause is engaged. | Human | Tower Lead, Source-to-Pay | policy | 6h 40m | 14h 1m | 2 | Group ERP — Financials |
| 5 | Issue PO | GBS | Requisition Validation Agent | gbs | 1h 44m | 2h 26m | 33 | Group ERP — Financials |
| 6 | Acknowledge | GBS | Requisition Validation Agent | gbs | 9m | 14m | 8 | Group ERP — Financials |
Operations
Run it
Change the volume, move the autonomy line, release a gate, and watch what happens to the hours in each lane and to the time it takes one run to get through. more
The simulation is arithmetic on the estate, not a queueing model. more
How it runs
Run it again, going wrong
The same unit and the same stations, broken the way the estate already records breaking. more
6 stations, walked twice
Once clean, once with the categories the estate counts
This is the same unit on the same stations, breaking. more
No break below was chosen. more
One play head, two tracks, the same scale. The clean run stops when it runs out of stations; the other one keeps going.
As written
6 stations, nothing waiting, nothing sent back
0 min of 15 hrs
now Requisition · Requisition Validation Agent · 17 min
As the ledger has it
the same stations, plus 3 categories the estate already counts
0 min of 20 hrs
now Requisition · Requisition Validation Agent · 17 min
What breaks, and where it is counted
No break below was chosen. more
What the two runs say together
3 counted categories land on this procedure. more
What this run cannot claim
These breaks are shown together on one unit so the shape of a bad day fits on one screen. more
Two clocks run. Worked time is the sum of the time the work is actually being done … more
Live observability
Systems this service would touch
Attributed by rule from the function's system list. more
1 systems attributed
0 of 1 returning records
Group ERP — Financials
SAP S/4HANA · ledger · bidirectional · critical
6 of 6 stations attributed here · would write back
System attribution is a rule, not a reading. more
Who runs it
Orchestration and accountability
- Orchestrated by
- Source-to-Pay Tower Orchestrator
- That orchestrator’s remit
- 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.
- Accountable person
- Tower Lead, Source-to-Pay
- Sub-function
- S2P Control Tower
- Shared spine tower
- s2p
- Hand-over points
- finance
Other services in this sub-function
3 alongside this one
What this page is and is not
This is a catalogue of the modeled estate. more