Customer-supplied print materials: reconciling envelopes and paper in outsourcing
A printing invoice does not explain where every customer-owned envelope went. Agree movement records, units and discrepancy handling before handing over the next delivery.
A company supplies 10,000 preprinted envelopes for production. At month end, the mailing report shows 2,400 items while the provider still holds 7,500 envelopes. Are 100 missing? Not necessarily: some may have been consumed during machine setup or damaged. Without separate records, however, justified consumption cannot be distinguished from an error.
Customer-owned materials used in printing and inserting need shared records from receipt through consumption or return. The starting point is a quantity balance supported by evidence for every movement. Agree the proposed model with the provider: counting coverage, responsibility for losses and reporting depend on the specific job. Discuss these arrangements with BackOffice Outsourcing before handing over materials.
1. Define ownership, units and the material variant
Separate provider-purchased materials from stock supplied by the customer. For each item, record its owner, code, format, paper weight, window position, artwork version and base reporting unit. Two white envelopes of the same size may have different windows or closures and should not share one balance.
Use individual pieces for envelopes and sheets for paper where those units match production reporting. A pack may be the receiving unit, but it needs an agreed conversion. Two cartons do not always contain the same number of pieces. Keep quantity reconciliation separate from accounting valuation; valuation requires its own agreement.
2. Confirm receipt, not merely delivery
The receiving record should identify the date, customer, item, batch, declared quantity, checked quantity, packaging condition and storage location. For larger deliveries, agree whether counting covers every piece or relies on sealed packs and sampling. The report must state the actual method rather than imply an accuracy that was never verified.
GS1 traceability connects events such as receiving and dispatch with data describing a particular movement. Applied here, that means linking the material, time, location and document. This is our application of the principle to printing, not a GS1 requirement imposed on every business outsourcing correspondence.
3. Separate production use, setup and damage
Issuing materials to a machine is not yet consumption. Record withdrawals, actual use in accepted production, setup use, waste, unused returns and material remaining at the workstation. Every entry needs a job identifier and the person or system that confirmed it.
Agree which losses require customer approval, what evidence is sufficient and who bears the cost. Do not apply one waste percentage to every job without supporting data. Complex personalisation and straightforward repeat printing can have different operating conditions. An unexplained discrepancy should not automatically become technical waste.
4. Close the balance at one consistent cut-off
The balance must cover the same material, unit and cut-off time. Closing stock = opening stock + receipts - accepted production consumption - setup use - documented damage - external issues. Moving envelopes from a shelf to a machine changes their location, not the total quantity held.
The example below is illustrative, not a claim about BackOffice Outsourcing waste rates. The 100 pieces consumed outside accepted production need supporting entries. If the physical count is 7,450 instead of 7,500, a 50-piece discrepancy remains to investigate. Do not invent a movement simply to make the report balance.
Illustrative balance for 10,000 envelopes
| Entry | Pieces |
|---|---|
| Opening stock | 0 |
| Material receipt | 10,000 |
| Accepted production | -2,400 |
| Machine setup | -80 |
| Documented damage | -20 |
| Closing stock | 7,500 |
Assumption: no other receipts, issues or adjustments; all remaining stock is on site.
5. Show available, reserved and blocked stock
Physical stock is not necessarily available for a new job. Of 7,500 envelopes, 2,000 may be reserved for an approved order and 500 blocked because the artwork is obsolete. Only 5,000 are then free to allocate. Reservations and blocks describe the same stock; they are not additional consumption in the quantity balance.
Batch and location identifiers help prevent customer materials being mixed up. Where partners use a GS1 Logistic Label, the SSCC identifies a logistic unit such as a pallet. It does not replace the envelope variant code or piece count. A smaller agreed workflow can start with consistent internal identifiers.
6. Investigate before adjusting the balance
First check pack conversions, movements entered after cut-off, workstation stock, batch mix-ups and unrecorded returns. Then recount the item and compare the supporting documents. An adjustment should record the previous quantity, corrected quantity, reason, evidence and approver. Retain the original entry history.
Choose count frequency according to movement, value and mix-up risk. Specialist preprinted envelopes may warrant more frequent checks than standard paper. This is a process design recommendation, not a statutory stocktaking deadline or a universal requirement to count monthly.
7. Agree the final report and material returns
A period report should show opening stock, receipts, consumption by category, adjustments, closing stock, statuses and locations. Separate service charges from material ownership. Signing a mailing report should not by itself imply acceptance of undocumented losses.
When a project ends, agree the quantity to return, transport costs, collection date and treatment of obsolete artwork. Destruction or use in another project needs the agreed authorisation. Without it, customer-owned stock remains allocated to that customer even after the project has finished.
Start with one material item
Reconcile one envelope variant across a complete cycle: receiving, production movements and a physical count. Extend the model only after resolving discrepancies. If you outsource document printing and inserting or order branded envelopes, explain in your enquiry to BackOffice Outsourcing whether you use your own materials. Together we can agree feasible handling and reconciliation arrangements for the specific job.
Sources and scope
Primary sources checked on 13 October 2026. GS1 describes traceability and logistic labelling; the balance model, example and suggested controls are editorial process recommendations.
FAQ
Is a dispatch report enough to reconcile envelopes?
No. It reports completed mailings but does not explain receipts, machine setup, damage or stock remaining on site.
Does a reservation reduce physical stock?
No. It reduces availability for other work. The material remains in physical stock until it is actually consumed or issued externally.
Must every delivery have an SSCC?
This guide does not require that. An SSCC is the mandatory identifier on a GS1 Logistic Label; using that standard depends on the agreed workflow.
When should a discrepancy change the recorded balance?
After recounting and checking documents. Record the adjustment reason and approval while retaining the original quantity history.