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A change can influence the mold, material, color, fit, logo, joining method, packaging, testing, cost or production planning. The safest process is to freeze the approved version, create a separate change request, identify affected items, confirm which evidence must be reviewed again, and issue a new approved revision before production proceeds.
Changes become riskier after approval because the sample has already become the reference for later work. Materials may have been prepared, files released, tooling scheduled, components ordered or production instructions created. An informal update can leave different teams working from different versions.
The issue is not whether a change looks small. The issue is whether it alters any approved requirement or production input. A new shade, logo position, footbed detail, upper thickness, size mark, label or carton instruction can create downstream effects.
The ISO 9001 Auditing Practices Group discusses identification, review, approval, retrieval and change control as relevant considerations across operational, design, supplier and production processes. Buyers do not need to build a complex system, but they do need one traceable version of the truth.
Official reference:
The approved sample should be linked to a complete approval record, not treated as an isolated object. The record explains exactly what the sample represents and which items remain open.
At minimum, identify:
If the buyer approves appearance while fit or packaging remains open, the record should say so. Avoid using approved as a vague status for a partially reviewed sample.
A practical change-control workflow separates the request from the decision. The factory should not implement a change until both sides understand what it affects and what must be approved again.
| Stage | Main action | Required output |
|---|---|---|
| Freeze baseline | Identify the last approved sample and specification | Approved version reference |
| Submit request | Describe one change clearly and explain the reason | Written change request |
| Review impact | Check design, tooling, material, size, quality, packaging and planning effects | Impact assessment |
| Decide approval route | Define whether documents, swatches, components or a complete sample need review | Re-approval plan |
| Update files | Revise every affected specification and remove obsolete versions from active use | New controlled revision |
| Authorize release | Obtain written buyer and factory acceptance of the production version | Production-release record |
| Verify implementation | Confirm the revised requirement appears in production references and checks | Change verification evidence |
This sequence can be managed with a simple spreadsheet or controlled document. The tool matters less than clear ownership, version identification and access to the current file.
A change request should state what is changing, what is staying unchanged, why the change is needed and which reference should be used. Specific language reduces the chance that the factory interprets a visual comment as a new specification.
Include:
Avoid messages such as make it softer, move it slightly or use the new logo unless the changed requirement can be measured or compared with a controlled reference.
A new physical sample is usually appropriate when the change can affect construction, fit, feel, molded geometry, component compatibility, appearance under real conditions or production quality. A document-only approval is more suitable for information that can be fully verified from the document itself.
Changes that often deserve physical review include:
The exact sample route depends on the project. Buyers should define the approval evidence rather than assuming that every change needs the same response.
Document approval can be enough when the changed requirement is fully expressed and verified through a controlled file and does not affect the physical product. Even then, the factory should confirm that the correct version reaches production and packing teams.
Examples may include a corrected address, an updated barcode supplied by the buyer, a revised carton mark or an approved text change. Legal and market labeling requirements must still be checked for the destination.
If artwork placement, print size, color or substrate changes, a digital file alone may not show the final physical result. The buyer should decide whether an artwork proof, packaging mock-up or physical sample is required.
Color, size and quality changes should link back to their specialist approval records. The change-control file identifies the revision; it does not replace the technical review needed for each subject.
Use the relevant existing guides:
This prevents one change form from becoming an oversized document that repeats every existing procedure.
Several changes should be grouped only after each change has been identified separately and its combined effect has been reviewed. A combined sample can be efficient, while making cause and responsibility harder to trace if the changes are not listed.
Create a revision summary showing:
If one requested change depends on another, record that dependency. For example, a new molded logo may depend on tooling approval, while a new upper color may depend on the final material route.
Obsolete versions should be marked clearly and removed from active production locations while remaining available as traceable history. Deleting every old file can remove evidence of what changed; leaving all versions unmarked can cause the wrong one to be used.
A simple naming rule can include the product code, document type, revision and approval date. The current production folder should contain only the released version. Older files can be moved to an archive marked superseded or obsolete.
Physical samples need similar control. Label the approved reference, current working sample and rejected or obsolete samples differently. Do not leave several unmarked samples on a development or production table.
If production preparation has started, the factory should pause the affected activity where practical, identify materials or work already committed, and explain the consequences before accepting the change. The buyer should then decide with full information.
The impact review may cover:
Development and production timing are assessed for each project. A late change should never be described as free of impact before the affected work has been reviewed.
Buyers can prevent uncontrolled changes by limiting approval authority, using one change channel and requiring a revision summary before production release. More messages do not create better control.
Good working rules include:
The Custom PU Slide Sandal RFQ Checklist can help define the project before sampling, reducing avoidable late changes.
Henghao Shoes is located in Jinjiang, Fujian, China and is focused on custom PU slide sandals. Post-approval changes can be reviewed against the approved sample, specification, tooling, material, color, size, branding, packaging and production status.
Flexible MOQ options may be discussed according to project conditions. Development and production timing are assessed for each project, including the impact of approved revisions. Buyers can contact Henghao Shoes with the current approved version and a clearly marked change request.
These answers cover the most common questions after a sample has been accepted.
Yes, a change can be requested, but the new color should follow a new approval route and its effect on material preparation and production planning should be reviewed.
If logo position is an approved requirement, the revised position should be documented. The need for a new physical sample depends on the method, surface and visual risk.
Yes, if the record clearly states which features remain approved and which have been superseded. The current production specification should bring those references together.
The buyer and factory should identify authorized contacts. The names or roles should be recorded so that informal comments are not mistaken for release approval.
No. The impact assessment determines which documents, components or samples must be reviewed again. Unaffected approvals can remain valid when that decision is documented.
This article combines practical footwear-development guidance with general change-control concepts. The official ISO Auditing Practices Group reference is provided as context for identification, review, approval, retrieval and control of changes; it does not certify any specific factory or product.
The appropriate approval route depends on the actual design, factory process, order status, buyer requirements and destination market. No customer data, fixed commercial term, sampling time or delivery commitment is published.
