Key facts
Code summary
Code 721
Official title Research and experimental development on
Version PSIC 2019
Source layer PSA / BSP
Pr
PSIC 2019 Navigation-first hub Group 721 - Research and experimental development on
PSIC Group 721 covers Research and experimental development on. Direct children below it include Research and experimental development on natural sciences and engineering. It clusters closely related activities and...
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Child codes
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Nearby codes
About this level
Practical summary
Group 721 sits in the PSIC 2019 hierarchy under M Professional, Scientific and Technical Activities > 72 Scientific Research and Development. This group usually narrows the choice to a small family of classes such as Research and experimental development on natural sciences and engineering. It is useful when two or three neighboring activities look similar but should not be collapsed into one code.
Administrative context
Where this code is used
This group is used when reviewers compare a short list of classes such as Research and experimental development on natural sciences and engineering and need to decide which family is the closest fit. It is common in internal classification review and administrative lookup work.
Selection note
How to choose it
Use this group when the activity sits between similar classes such as Research and experimental development on natural sciences and engineering. The safest choice is the one whose wording matches the actual production, service or operating model most closely.
FAQ
What does PSIC Group 721 cover?
PSIC Group 721 clusters a smaller family of classes under Research and experimental development on and is useful when the business sits between closely related options.
How do I compare Group 721 with sibling groups?
Look at the parent class and the nearby sibling groups. On this page, the most relevant nearby options are 722 Research and Experimental Development on Social Sciences and Humanities and 723 Research and Experimental Development in Information Technology.
Why is Group 721 useful for classification?
It sits at the point where a broad sector is already narrowed enough to compare a small family of similar classes before the final code choice.