Glossary of SOP and work instruction terms

Last updated: 26 August 2026

Short, practical definitions of the terms you meet when digitalising procedures on the shop floor. Each term links to the page or article that goes deeper.

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5S

A workplace organisation method from lean manufacturing: sort, set in order, shine, standardise and sustain. The sustain step usually takes the form of periodic 5S audits, which are a natural first digital checklist with photos per area and a score. Read more

A

ALCOA

Acronym for the data-integrity principles used in GMP: records must be Attributable, Legible, Contemporaneous, Original and Accurate (extended to ALCOA+ with complete, consistent, enduring and available). A digital execution log with user, timestamp and original values satisfies these principles automatically. Read more

Audit trail

The complete, time-stamped record of who did what, when and with which result. In a digital work instruction it is created automatically per step: user, timestamp, instruction version, entered values, photos and signatures. It is the evidence auditors and customers ask for. Read more

B

Batch record

The complete record of the production of one batch: materials and lot numbers used, process parameters, in-process checks, deviations and the persons who performed and verified each step. Digital forms inside work instructions build the batch record while the work is done. Read more

C

CAPA (corrective and preventive action)

The structured follow-up of a deviation or complaint: find the root cause, correct it and prevent recurrence, then verify that the action worked. A frequent outcome is a changed work instruction; version control and the execution log show that the new version is actually used. Read more

Checklist

A list of checks that must be confirmed in order, used for start-up, cleaning, safety rounds and inspections. A digital checklist records who confirmed each item and when, can ask for values and photos, and makes skipped checks impossible. Read more

Connected worker

A frontline employee equipped with a mobile device that provides instructions, captures data and communicates with company systems in real time. Connected-worker platforms combine digital work instructions, checklists, forms and skills management; the Work Instruction App is one of them. Read more

D

Deviation (non-conformance)

Any departure from the approved procedure, specification or expected result: a value out of tolerance, a skipped step, a damaged part. Quality systems require deviations to be recorded, assessed and, where needed, followed by corrective action. In a digital instruction a deviation is a remark or photo at the step where it occurred. Read more

Digital form

Structured data capture inside a work instruction: numbers, text, dates, photos, barcode scans and signatures entered at the step where the value originates. Replaces paper forms and the error-prone transcription to spreadsheets; the data is available for analysis and integration through an API. Read more

Digital work instruction

A work instruction that is executed on a phone, tablet or PC instead of read on paper: each step is shown with photo or video, asks for confirmation or input, and every execution is logged with user and timestamp. Opened at the workstation via QR code or NFC tag. Read more

Document control

The set of rules that keeps documents identified, approved, current, available where needed and protected against unintended change or loss. ISO 9001 clause 7.5 calls this control of documented information; version control is its most visible part. Read more

Documented information (ISO 9001)

The ISO 9001:2015 term for both documents (procedures, instructions, drawings) and records (evidence of results). It is medium-neutral: paper, PDF, database record or app all qualify, as long as the information is controlled, available and retained as required. Read more

E

Electronic signature

A signature captured digitally as part of a step, linked to the logged-in user and a timestamp, used for releases, handovers and approvals. Whether it meets regulatory requirements such as 21 CFR Part 11 depends on the identification and control procedures around it. Read more

Execution (of a work instruction)

One run of a work instruction by one user, from the first step to the last, including every confirmation, value, photo and signature entered along the way. Executions are the unit of the audit trail and the basis for analysis: how often, by whom, with which results. Read more

F

First time right

The share of tasks or products completed correctly without rework. The main lever is giving the operator the right information at the right moment: a photo of the correct state, the target value and a check before continuing. It is the most direct business case for digital work instructions. Read more

G

Good Manufacturing Practice (GMP)

Regulations for pharmaceutical, food, feed and cosmetics production (EU GMP, FDA 21 CFR 210/211, GMP+) requiring approved procedures, qualified people, controlled equipment and complete, attributable records for every batch. Digital work instructions with an audit trail meet the record requirements by design. Read more

K

Knowledge management

Capturing what experienced people know and making it available to everyone who needs it, at the moment they need it. On the shop floor this means turning tacit knowledge into executable work instructions with photos and video, and keeping them current through feedback from operators. Read more

L

Line clearance

The documented check, before a new batch starts, that a production or packaging line is free of materials, products and documents from the previous batch and set up for the next one. A digital line-clearance instruction with photos per zone and a QA signature replaces the ticked form. Read more

Logbook

A chronological record of events around one object: a machine, vehicle, room or product. Entries cover maintenance, readings, incidents, cleaning and handovers. A digital logbook is opened by scanning the QR code or NFC tag on the object and stores every entry with user and timestamp. Read more

M

MES (manufacturing execution system)

Software that manages and monitors production orders on the shop floor between ERP planning and machine control. Work instruction software complements an MES by guiding the operator through each task and returning execution data through an API, rather than replacing order management. Read more

N

NFC tag

A small passive chip that a phone reads by touching it. Like a QR code it opens the work instruction for an object, but it works in dirt, poor light and behind protective covers, and cannot be photographed and reused elsewhere. Common on machines, tools and rental equipment. Read more

O

Onboarding

Bringing a new or temporary employee to the point where they perform tasks correctly and safely without supervision. Digital work instructions shorten onboarding because the instruction guides the first executions and the log shows which tasks a person has completed. Read more

P

Paperless manufacturing

Running production without paper work orders, instructions, forms and logbooks: information is shown on screens and data is captured digitally at the source. The benefits are current information at every workstation, no transcription errors and records that are complete the moment the work is done. Read more

Poka-yoke

Japanese for mistake-proofing: designing a process so that errors cannot happen or are detected immediately. In digital work instructions this takes the form of required inputs, barcode checks against the work order and steps that cannot be skipped. Read more

Policy

A statement of intent and principles set by management: what the organisation commits to (quality, safety, environment) and the boundaries within which processes operate. Policies rarely change; procedures and work instructions translate them into daily practice.

Procedure

A description of how a process is performed: who does what, in which order, with which inputs, outputs and records. A procedure sits between policy (why) and work instructions (exactly how). In quality systems the terms procedure and SOP are used interchangeably. Read more

Q

QR code

A two-dimensional barcode that a phone camera reads in a second. Printed on a machine, workstation or product, it opens the current work instruction for that object directly, without searching in menus or folders. The cheapest way to link a physical place to a digital instruction. Read more

S

Skills matrix

A table of employees against tasks showing who is qualified for what, used for planning, onboarding and audit evidence of competence (ISO 9001 clause 7.2). Linked to executed work instructions it maintains itself instead of being a spreadsheet that ages after every audit. Read more

Standard operating procedure (SOP)

An approved, versioned description of how a recurring process is carried out: purpose, scope, responsibilities, the activities in sequence and the records to keep. SOPs make results repeatable regardless of who performs the work and are the backbone of ISO 9001 and GMP systems. Read more

Standard work

The lean-manufacturing principle that every task has one current best-known method, documented and followed by everyone, which is the baseline for improvement. Work instructions are the documented form of standard work; version control keeps the baseline current. Read more

T

Traceability

The ability to reconstruct the history of a product or batch: which materials, machines, settings and people were involved, and which checks were performed. Scanned lot numbers and logged executions provide traceability without manual bookkeeping. Read more

Tribal knowledge

Undocumented know-how that lives only in the heads of experienced employees: the settings that work, the trick that prevents a jam, the check nobody wrote down. It leaves the company when they do. Recording it as work instructions is the core of shop-floor knowledge management. Read more

U

User roles (execute, analyse, manage)

The three levels of access in the Work Instruction App: Execute users run instructions, Analyze users also review executions and results, Manage users also create and publish instructions and manage users. Pricing is per user per role, so operators cost less than managers. Read more

V

Version control

Managing changes to procedures so that only one approved version is in use, every change is traceable (who, when, what) and older versions remain available. Digital systems enforce this automatically; on paper it depends on collecting and replacing every copy. Read more

W

Work instruction

The most concrete level of documentation: a step-by-step guide for one task at one workstation, with one action per step, photos of the real situation, target values and checks. A work instruction belongs to a procedure and is written for the person doing the work. Read more

Related pages

• SOP Software for Standard Operating Procedures
• Digital Work Instructions Software – Visual, Step-by-Step
• FAQ – Digital SOP & Work Instruction Software
• Blog