What’s the difference between A 'Type A' and 'Type B' MSS?

A Type A MSS contains requirements against which an organization can claim conformance, whereas a Type B MSS does not. 

As a consequence, one should only find recommendations (guidelines) or supporting information in a Type B MSS. Some MSSs can contain a mix of requirements and guidelines: as they contain requirements, they will be considered Type A MSSs. Usually, a Type B MSS (e.g. ISO 50004) provides guidance on the application of a Type A MSS (e.g. ISO 50001). However, some Type B MSSs are independent (e.g. ISO 37002).

To claim conformance with a standard, an organization needs evidence that it is meeting the requirements. Such evidence gathering is generally done by undertaking an audit. There are three types of audits: first-party, second-party, and third-party. First-party audits are internal audits. Second and third party audits are external audits. A third party audit can result in certification. Regarding certification: certification can only take place against a document that contains requirements. Therefore, Type B MSS cannot be certified against. 

Harmonized Structure - HS

Standards listed here as HS have the same structure and contain many of the same terms and definitions. This is particularly useful for those organizations that choose to operate a single (sometimes called “integrated”) management system that can meet the requirements of two or more management system standards simultaneously. 

ISO has a Joint Technical Coordination Group on MSS, that are experts from the committees that have MSS. There is a dedicated website to update users and committees of work within JTCG.

Female scientist in protective clothing and goggles uses a purple beam laser equipment.
Popular management system standards

We have a number of MSS, each focusing on different issues affecting global business. Find more information about some of the best-known ones.

This guide helps organizations using — or planning to use — multiple management system standards (MSS) build one cohesive, efficient integrated management system.
Standard and/or project Type HS
Quality management systems — Guidance for the application of ISO 19443:2018
B HS
Healthcare organization management — Management systems for quality in healthcare organizations — Requirements
A HS
Quality management systems — Requirements
A HS
ISO/FDIS 9001 [Under development]
Quality management systems — Requirements
A HS
Quality management systems — Guidelines for the application of ISO 9001:2015
B HS
ISO/DIS 9002 [Under development]
Quality management systems — Guidelines for the application of ISO 9001
B  
Quality management — Quality of an organization — Guidance to achieve sustained success
B  
Quality management — Customer satisfaction — Guidelines for monitoring and measuring
B  
Quality management — Guidelines for quality management in projects
B  
Quality management — Requirements for measurement management systems
A HS
Consumer product safety — Guidelines for suppliers
B  
Consumer product recall — Guidelines for suppliers
B  
Medical devices — Quality management systems — Requirements for regulatory purposes
A  
Environmental management systems — Requirements with guidance for use
A  
Environmental management systems — Guidelines for using ISO 14001 to address environmental aspects and conditions within an environmental topic area — Part 1: General
B  
Environmental management systems — Guidelines for using ISO 14001 to address environmental aspects and conditions within an environmental topic area — Part 2: Water
B  
ISO/FDIS 14002-3 [Under development]
Environmental management systems — Guidelines for using ISO 14001 to address environmental aspects and conditions within an environmental topic area — Part 3: Climate
B  
Environmental management systems — General guidelines on implementation
B HS
Environmental management systems — Guidelines for a flexible approach to phased implementation
B  
Environmental management systems — Guidelines for incorporating ecodesign
B  
Environmental management systems — Guidelines for incorporating material circulation in design and development
B HS
Graphic technology — Management of security printing processes
A HS
Primary packaging materials for medicinal products — Particular requirements for the application of ISO 9001:2015, with reference to good manufacturing practice (GMP)
A HS
Indoor air — Part 40: Indoor air quality management system
A HS
Transport packages for dangerous goods — Dangerous goods packagings, intermediate bulk containers (IBCs) and large packagings — Guidelines for the application of ISO 9001
B  
Quality management systems — Guidelines for the application of ISO 9001 in local government
B HS
Management system for private security operations — Requirements with guidance for use
A HS
Geographic information — Quality assurance of data supply
B  
ISO/AWI 19158 [Under development]
Geographic information — Quality assurance of data supply
B  
Quality management systems — Specific requirements for the application of ISO 9001:2015 by organizations in the supply chain of the nuclear energy sector supplying products and services important to nuclear safety (ITNS)
A HS
ISO/CD 19443.2 [Under development]
Quality management systems — Specific requirements for the application of ISO 9001:2015 by organizations in the supply chain of the nuclear energy sector supplying products and services important to nuclear safety (ITNS)
A  
Information technology — IT asset management — Part 1: IT asset management systems — Requirements
A HS
Information technology — Service management — Part 1: Service management system requirements
A HS
Information technology — Service management — Part 2: Guidance on the application of service management systems
B HS
Information technology — Service management — Part 2: Guidance on the application of service management systems — Amendment 1
B  
Information technology — Service management — Part 5: Implementation guidance for ISO/IEC 20000-1
B  
Information technology — Service management — Part 16: Guidance on sustainability within a service management system based on ISO/IEC 20000-1
B  
ISO/FDIS 20001 [Under development]
Food loss and waste management system — Requirements for the prevention and minimization of food loss and waste across the food supply chain
A HS
Event sustainability management systems — Requirements with guidance for use
A HS
Educational organizations — Management systems for educational organizations — Requirements with guidance for use
A HS
Adventure tourism — Safety management systems — Requirements
A HS
Tourism and related services — Sustainability management system for accommodation establishments — Requirements
A HS
Food safety management systems — Requirements for any organization in the food chain
A HS
ISO/DIS 22000 [Under development]
Food safety management systems — Requirements for any organization in the food chain
A HS
Prerequisite programmes on food safety — Part 100: Requirements for the food, feed and packaging supply chain
A  
Quality management systems — Guidelines for the application of ISO 9001:2008 to crop production
B  
Railway applications — Railway quality management system — ISO 9001:2015 and specific requirements for application in the railway sector
A HS
ISO/AWI 22163 [Under development]
Railway applications — Railway quality management system — ISO 9001:2015 and specific requirements for application in the railway sector
A  
Security and resilience — Business continuity management systems — Requirements
A HS
ISO/CD 22301 [Under development]
Security and resilience — Business continuity management systems — Requirements
A  
Security and resilience — Business continuity management systems — Guidance on the use of ISO 22301
B HS
ISO/AWI 22313 [Under development]
Security and resilience — Business continuity management systems — Guidance on the use of ISO 22301
B  
ISO/IEC DTS 22443 [Under development]
Information technology — Artificial intelligence — Guidance on addressing societal concerns and ethical considerations
B  
Activities relating to drinking water and wastewater services — Crisis management of water utilities
B HS
ISO/PAS 25171 [Under development]
Educational organizations — Management systems — Guidance for auditing ISO 21001
B  
Information security, cybersecurity and privacy protection — Information security management systems — Requirements
A HS
Information technology — Security techniques — Information security management systems — Guidance
B HS
ISO/IEC CD 27003.3 [Under development]
Information technology — Security techniques — Information security management systems — Guidance
B  
Information technology — Security techniques — Information security management for inter-sector and inter-organizational communications
B HS
Information security, cybersecurity and privacy protection — Guidance on the integrated implementation of ISO/IEC 27001 and ISO/IEC 20000-1
B  
Information security, cybersecurity and privacy protection — Guidance on the integrated implementation of ISO/IEC 27001 and ISO/IEC 20000-1 — Amendment 1
B  
Information security, cybersecurity and privacy protection — Governance of information security
B  
ISO/IEC FDIS 27014 [Under development]
Information security, cybersecurity and privacy protection — Governance of information security
B  
Information security, cybersecurity and privacy protection — Application of ISO 31000 for assessment of identity-related risk
B  
Information security, cybersecurity and privacy protection — Privacy information management systems — Requirements and guidance
A  
Security and resilience — Security management systems — Requirements
A HS
Security management systems for the supply chain — Best practices for implementing supply chain security, assessments and plans — Requirements and guidance
A  
Security management systems for the supply chain — Guidelines for the implementation of ISO 28000 — Part 1: General principles
B  
Security management systems for the supply chain — Guidelines for the implementation of ISO 28000 — Part 2: Guidelines for adopting ISO 28000 for use in medium and small seaport operations
B  
Security management systems for the supply chain — Guidelines for the implementation of ISO 28000 — Part 3: Additional specific guidance for adopting ISO 28000 for use by medium and small businesses (other than marine ports)
B  
Security management systems for the supply chain — Guidelines for the implementation of ISO 28000 — Part 4: Additional specific guidance on implementing ISO 28000 if compliance with ISO 28001 is a management objective
B  
Security management systems for the supply chain — Guidelines for the implementation of ISO 28000 — Part 1: General principles — Technical Corrigendum 1
B  
Ships and marine technology — Guidelines for Private Maritime Security Companies (PMSC) providing privately contracted armed security personnel (PCASP) on board ships (and pro forma contract) — Part 1: General
B  
ISO/CD 28018 [Under development]
Security and resilience — Security management systems — Guidelines for the application and implementation of ISO 28000 in the supply chain
B  
ISO/DIS 28022 [Under development]
Security and resilience ― Security management systems ― Guidelines on security management system (SMS) processes
B  
Inland navigation and commercial shipping — Safety and sustainability management systems — Requirements and guidance for use
A HS
Petroleum, petrochemical and natural gas industries — Sector-specific quality management systems — Requirements for product and service supply organizations
A HS
ISO/DIS 29501 [Under development]
Operating management systems — Requirements with guidance for use
A  
Ships and marine technology — Ship recycling management systems — Specifications for management systems for safe and environmentally sound ship recycling facilities
A  
Ships and marine technology — Ship recycling management systems — Guidelines for the implementation of ISO 30000
B  
ISO 30201 [Under development]
Human resources management systems — Requirements
A  
Information and documentation — Management systems for records — Requirements
A HS
ISO/DIS 30301 [Under development]
Information and documentation — Management systems for records — Requirements
A  
Information and documentation — Management systems for records — Guidelines for implementation
B HS
Information and documentation — Management systems for records — Guidelines for implementation — Amendment 1: Non conformities, corrective actions and climate change requirements
B  
Knowledge management systems — Requirements
A HS
Knowledge management systems — Requirements — Amendment 1
A  
ISO/DIS 30401 [Under development]
Knowledge management systems — Requirements
A  
ISO/AWI 31011 [Under development]
ISO 31011 — Management System to address risks and opportunities — Guidelines
B  
Robotics — Application services provided by service robots — Safety management systems requirements
A HS
Sustainable and traceable cocoa — Part 1: Requirements for cocoa sustainability management systems
A HS
Animal welfare management — General requirements and guidance for organizations in the food supply chain
A  
Biorisk management for laboratories and other related organisations
A HS
ISO/AWI 35001 [Under development]
Biorisk management for laboratories and other related organisations
A HS
Anti-bribery management systems — Requirements with guidance for use
A HS
Whistleblowing management systems — Guidelines
B HS
Fraud control management systems — Guidance for organizations managing the risk of fraud
B  
Sustainable development in communities — Management system for sustainable development — Requirements with guidance for use
A HS
ISO/AWI 37101 [Under development]
Sustainable development in communities — Management system for sustainable development — Requirements with guidance for use
A  
ISO/CD 37201 [Under development]
Management systems to prevent and combat violence against women in organizations — Requirements with guidance for use
A  
Compliance management systems — Requirements with guidance for use
A HS
ISO/DIS 37401 [Under development]
Diversity management systems — Requirements with guidance for use
A  
Road traffic safety (RTS) management systems — Requirements with guidance for use
A HS
ISO/WD 39001 [Under development]
Road traffic safety (RTS) management systems — Requirements with guidance for use
A  
Facility management — Management systems — Requirements with guidance for use
A HS
ISO/DIS 41001 [Under development]
Facility management — Management systems — Requirements with guidance for use
A HS
Facility management — Influencing organizational behaviours for improved facility outcomes
B  
Information technology — Artificial intelligence — Management system
A HS
Collaborative business relationship management systems — Requirements and framework
A HS
ISO/DIS 44001 [Under development]
Collaborative business relationship management systems — Requirements and framework
A HS
Collaborative business relationship management systems — Guidelines on the implementation of ISO 44001
B HS
ISO/AWI 44002 [Under development]
Collaborative business relationship management systems — Guidelines on the implementation of ISO 44001
B  
Collaborative business relationship management system — Guidance on leadership for collaborative working
B  
Occupational health and safety management systems — Requirements with guidance for use
A HS
Occupational health and safety management systems — Requirements with guidance for use — Amendment 1: Climate action changes
A  
ISO/DIS 45001 [Under development]
Occupational health and safety management systems — Requirements with guidance for use
A  
Occupational health and safety management systems — General guidelines for the implementation of ISO 45001:2018
B HS
Occupational health and safety management — Guidelines on performance evaluation
B  
Occupational health and safety management — Guidelines for organizations on preventing, controlling and managing infectious diseases
B  
ISO/FDIS 45010 [Under development]
Occupational health and safety management — Menstruation and menopause in the workplace — Guidance
B  
Water efficiency management systems — Requirements with guidance for use
A HS
ISO/WD 46001 [Under development]
Water efficiency management systems — Requirements with guidance for use
A  
Energy management systems — Requirements with guidance for use
A HS
Energy management systems — Guidance for the implementation, maintenance and improvement of an ISO 50001 energy management system
B  
Energy management systems — Guidelines for a phased implementation
B  
Energy management systems — Guidance for implementing a common energy management system in multiple organizations
B  
Energy management and energy savings — Guidance for net zero energy in operations using an ISO 50001 energy management system
B  
Energy management systems ― Assessing energy management using ISO 50001:2018
B  
ISO/UNDP 53001 [Under development]
Management systems for United Nations Sustainable Development Goals (SDGs) — Requirements
A HS
ISO/UNDP DIS 53002 [Under development]
Management systems for the United Nations Sustainable Development Goals SDGs — Implementation guidance
B  
Quality management systems — Particular requirements for the application of ISO 9001:2015 for electoral organizations at all levels of government
A HS
Quality management systems — Guidance for the application of ISO 9001:2015 in police organizations
B  
Asset management — Vocabulary, overview and principles
B  
Asset management — Asset management system — Requirements
A HS
Asset management — Management systems — Guidelines for the application of ISO 55001
B HS
ISO/CD 55002.2 [Under development]
Asset management — Management systems — Guidelines for the application of ISO 55001
B  
Asset management — Guidance on the alignment of financial and non-financial functions in asset management
B  
Asset management — Guidance for the development of public policy to enable asset management
B  
Asset management — Guidance on people involvement and competence
B  
Asset management — Guidance on the management of data assets
B  
ISO/CD TS 55014 [Under development]
Guidance for asset management decision making
B  
Innovation management system — Requirements
A HS
Innovation management — Innovation management system — Guidance
B HS
ISO/CD 56002 [Under development]
Innovation management — Innovation management system — Guidance
B  
ISO/AWI 59001 [Under development]
Circular economy management systems — Requirements
A  
Explosive atmospheres — Part 34: Application of quality management systems for Ex Product manufacture
A HS
ISO/IEC DIS 80079-34 [Under development]
Explosive atmospheres — Part 34: Application of quality management systems for Ex Product manufacture
A  
Software engineering — Guidelines for the application of ISO 9001:2015 to computer software
B HS