POS operations guide
Plumbing service contractor diagnostic, estimate, call-out, recurring-maintenance, material-cost and client-balance POS workflow
Plumbing work joins urgent call-outs, site and system diagnosis, estimate approval, licensed work, isolation and testing, materials, recurring maintenance, callbacks and account billing. Keep attendance, diagnosis, accepted scope, work evidence, stock movement, actual cost, invoice and client balance separate.
Evidence and jurisdiction boundary
Evidence reviewed 2026-09-09. Reviewed the current Posnic release boundary and archived customer, sale and item models alongside current US EPA lead-free plumbing-material and WaterSense maintenance guidance and OSHA confined-space guidance. These US sources illustrate material, maintenance and entry boundaries; they do not replace manufacturer instructions or licensing, plumbing-code, water-safety, gas, electrical, waste, worker-safety and consumer rules where a contractor operates.
Stable release: v1.6.1. This page does not establish a live plumbing deployment, correct diagnosis, valid licence, accepted work, suitable material, safe isolation or entry, passed pressure or leak test, potable-water safety, client sign-off or payment settlement. Product evidence remains pinned to an archived source snapshot.
What the current product evidence establishes
Client and balance fields exist
Customer identity, balance and payment-term fields can be inspected for a client or payer. They do not prove property authority, site access, system ownership or privacy compliance.
Quote and sale records exist
Quotation and sale lines can model call-outs, diagnostics, labour, recurring maintenance, materials, credits and refunds. They do not prove attendance, work or safety.
Item history can be evaluated
Item and stock-history paths can be tested for pipe, fittings, valves, fixtures and consumables. They do not prove intended use, certification, installation, removed-material handling or test results.
Technical work remains outside POS
Diagnosis, licence scope, isolation, confined-space control, material selection, installation, water-safety and pressure, leak or function testing require qualified review.
Plumbing service contractor POS controls before rollout
A booked call-out is not a diagnosis, an invoice is not a work or test record, and payment is not proof that a plumbing system is safe or repaired.
| Area | Record to keep | Why it matters | Acceptance check |
|---|---|---|---|
| Client, site, payer and system | Contracting party, service site, billing entity, system or fixture identifier, location, access, property authority and privacy boundary. | Owner, occupant, manager and payer may differ; one site may contain many plumbing systems. | Every call-out, job and charge resolve to the right client and work location. |
| Intake and diagnostic | Reported leak, blockage, pressure, temperature or damage risk; operating state, prior work, observations, measurements, method, plumber, time, uncertainty and assessment. | A customer description or visible symptom alone is not a diagnosis. | Urgency, original findings and revisions remain attributable. |
| Call-out, estimate and authority | Attendance fee, included time, travel, after-hours terms, diagnostics, labour, materials, equipment hire, subcontract, disposal, exclusions, tax, price, validity, approval limit and version. | Attendance may be chargeable while repair scope changes after diagnosis or access. | Accepted call-out terms, estimate version and approving party remain identifiable. |
| Licence and work gate | Plumber licence, registration or endorsement, jurisdiction, work category, evidence, expiry and required supervision. | A staff assignment or POS role does not establish authority for regulated work. | Missing, expired or out-of-scope evidence blocks ready status. |
| Recurring maintenance | Agreement period, planned date, system and fixture checklist, visit reference, plumber, access window and billing rule. | Planned, assigned, attended, inspected, maintained, evidenced and billed are distinct. | No service charge is raised from schedule alone. |
| Work and test evidence | Arrival, system, diagnostic reference, isolation, work performed, material installed, removed item, pressure or leak test, function result, plumber, time and completion. | A generic sale line cannot prove correct installation, testing or restoration. | Operational evidence is linked without being invented by POS. |
| Material suitability | Potable or non-potable use, manufacturer item, pipe or fitting type, size, batch, certification reference, installed location and acceptance. | Purchased, stocked or invoiced material is not automatically suitable for its intended system. | Selection and evidence remain reviewable separately from billing. |
| Isolation, entry and hand-off | Water, energy or gas isolation; confined-space assessment; hazards, controls, system status, unresolved defect, operating instruction and acknowledgement. | Safe access and restoration depend on the site, system, people and jurisdiction. | Invoice status cannot override an unsafe, untested or incomplete state. |
| Material movement | Stock issue, item and batch, quantity out, actual use, unused return, removed material, retention, recycling, disposal, adjustment and owner. | Stock movement is not correct selection, installation or waste-handling evidence. | Installed, returned and removed quantities reconcile with a reason and owner. |
| Cost and client charge | Estimated and actual call-out, labour, material, freight, equipment-hire, subcontract and disposal cost plus accepted client price. | Attendance, internal cost, landed cost and sale price affect margin differently. | Cost changes do not overwrite client approval. |
| Callback or repeat fault | Complaint, new diagnostic evidence, cause review, warranty boundary, revisit, extra work, credit and resolution. | A repeat fault is not silently a completed new sale. | Original service and every decision stay visible. |
| Invoice and collection | Invoice period, evidenced attendance and work, accepted call-out, labour and material charges, tax, credit, due date, payment and reversal. | Revenue and remaining repair or maintenance obligations can diverge. | Client balance reconciles to accepted terms and evidenced work. |
| Owner close | Open call-outs, diagnostics, estimates, visits, tests, material movement, callbacks, sales, receivables, credits, incidents and margin. | Cash close alone hides operational risk. | Finance, stock and plumbing-service obligations close together. |
Practical workflow
Accept call-out terms first
Record urgency, access, attendance fee, included time, after-hours terms and diagnostic-credit rule before dispatch.
Diagnose and version the estimate
Keep findings, alternatives, labour, materials, hire, exclusions, approval limit and accepted version visible.
Link work and test evidence
Keep isolation, installation, material, removed-item and pressure, leak or function evidence in the operational record before invoicing.
Close callbacks with the balance
Review repeat faults, revisits, stock adjustments, warranty decisions, credits and unpaid invoices beside the original job.
Call-out-to-payment flow
Intake and dispatch
Capture client, site, urgency, system, access and accepted call-out terms.
Diagnose and authorize
Record findings, version work and materials, and retain approval.
Work and test
Keep isolation, material, installation, removed-item, test and hand-off evidence outside the invoice.
Invoice evidenced work
Reconcile attendance, labour, materials, credits, tax and approval.
Collect and review
Close payment, client balance, callbacks, stock, cost and open service obligations.
Hardware, software and data setup
Hardware
- Office computer or tablet and quote or receipt printer.
- Field device only after offline, access-control and privacy testing.
- Separate appropriate inspection, pressure, flow, temperature and leak-test instruments; POS is not a technical instrument.
- Barcode scanner where pipe, fitting, valve, fixture or batch workflows support it.
- Payment terminal without storing card data in POS.
- Off-device backup for client, system, work-reference, stock and payment records.
Software and data
- Client, payer, site, system and fixture accounts using minimum necessary data.
- Separate call-out, diagnostic, recurring-maintenance, labour, material, callback, credit and refund items.
- Distinct requested, dispatched, attended, diagnosed, authorized, isolated, worked, tested, handed-off, invoiced and paid states.
- Restricted access to licences, access details, findings, tests, incidents and work references.
- Reports for balances, open work, material movement, callbacks, credits and margin.
Setup sequence
- Write intake, urgency, call-out, diagnostic, estimate, authorization, licence, isolation, entry, work, test, hand-off, callback, invoicing and credit rules.
- Create synthetic clients, sites, payers, systems, fixtures, services, plumbers, pipe, fittings, valves, consumables and payment labels.
- Accept call-out terms, then version one diagnostic and estimate without merging attendance into repair approval.
- Assign a recurring visit without treating assignment as attendance or maintenance.
- Test licence-scope, safe-entry and isolation gates before dispatch or work.
- Test material issue, intended-use evidence, installation, unused return, removal and disposal references.
- Test pressure, leak, flow, temperature or function evidence applicable to the synthetic work.
- Test failed access, unsafe condition, unavailable material, repeat fault, failed payment and credit.
- Reconcile invoices, receipts, stock movement, actual costs, callbacks and open visits.
- Back up and restore records, then obtain operations, licensing, water-safety, worker-safety, payment, privacy and local approval.
Product evidence to inspect
Mistakes to avoid
- Treating booking, dispatch, attendance, invoice or payment as proof of diagnosis or repair.
- Hiding call-out, after-hours or diagnostic-credit terms until invoicing.
- Using one client-level note for multiple systems without a precise work location.
- Storing pipe, fittings and fixtures as generic materials without intended-use and item evidence.
- Using POS permissions as evidence of a plumber licence, safe entry or work scope.
- Overwriting diagnostic, estimate, isolation, work, test or callback history.
- Putting access codes, hazard details or sensitive site information on receipts.
- Importing real client data before backup and restore pass.
Use the blank plumbing service contractor POS acceptance record
The CSV keeps 24 controls blank until the exact workflow is tested, including site identity, urgency, call-out terms, diagnosis, estimate authority, licence and safety gates, work and test evidence, material movement, callbacks, invoices, credits and restore.
Primary sources used
Current stable release
Pinned source tree
EPA lead-free plumbing materials
EPA WaterSense maintenance
OSHA confined spaces
Local authority
Confirm licensing, plumbing and building codes, potable-water, gas, electrical, waste, worker-safety, warranty and consumer duties where work occurs.
Where Posnic fits
Posnic Community Edition can be evaluated for office estimates, call-out, labour and material items, client accounts, payment labels, controlled stock, credits and reports. Keep dispatch, diagnosis, licences, isolation, entry controls, technical work, pressure and leak tests, water safety, incidents and legal reporting outside scope until the workflow passes the blank record.