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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
under request
Grammar usage guide and real-world examplesUSAGE SUMMARY
"under request" is an acceptable and commonly used phrase in written English.
You can use it to refer to something that is done or given when it is asked for. For example, "We received the additional information we requested under request."
✓ Grammatically correct
Science
Academia
News & Media
Alternative expressions(20)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
30 human-written examples
This information will be used by the service robot to find objects under request.
Science
The datasets generated and analysed in the current study are available under request from the corresponding author.
Science & Research
We find that our data server can provide data to hundreds of simultaneous clients and provide service under request loads beyond the limits of traditional queued or other unicast file service.
Academia
In cases in which the materials under request are voluminous, the Head shall review them and summarize their nature and content and shall bring to the attention of those reviewing the request individual documents that may be of particular concern.
Academia
Faculty and staff wishing to request core ITS services can use the below online forms available on through myHelpdesk under "Request Something". A valid CWID and authorization to submit forms are required to log into the application.
Academia
Database is available with the first author under request.
Human-verified similar examples from authoritative sources
Similar Expressions
30 human-written examples
Performance suffers as employees are buried under requests for advice, access to resources, or attendance at a meeting, he said.
News & Media
"Under the request for proposal, there is an option of renovating, adding or demolishing the building".
News & Media
"The Department of Energy's … Office of Science would get $5.672 billion under the request, a 4.2% increase over existing levels".
Science & Research
The Department of Energy's (DOE's) Office of Science would get $5.672 billion under the request, a 4.2% increase over existing levels.
Science & Research
It says civil servants were unable to find certain emails when asked to retrieve them under a request.
News & Media
Expert writing Tips
Best practice
Use "under request" when you want to clearly state that something, such as data or code, is available if someone asks for it. Be sure to specify who the request should be directed to.
Common error
Avoid using "under request" when you mean "on demand". "On demand" implies immediate availability, while "under request" simply means something is accessible if specifically asked for. If something is instantly available, "on demand" is more appropriate.
Source & Trust
84%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "under request" functions as a prepositional phrase modifying a noun or verb. It typically indicates the conditions or means by which something can be obtained or accessed. The examples Ludwig shows demonstrates how it specifies the availability of information, data, or services.
Frequent in
Science
52%
Academia
29%
News & Media
13%
Less common in
Formal & Business
3%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "under request" is a prepositional phrase primarily used to indicate that something is available if specifically asked for. Ludwig AI confirms its acceptability in written English. It's commonly found in scientific and academic writing, signaling that data, code, or other resources can be obtained through a formal request. While similar to phrases like "upon request" or "on demand", it's crucial to use it accurately: "under request" implies a necessary action of asking, while "on demand" suggests immediate availability. When using "under request", be clear about who should be contacted to fulfill the request.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
upon request
Replaces "under" with "upon", offering a slightly more formal tone while retaining the same core meaning of availability when asked.
by request
Emphasizes the act of requesting as the condition for something being provided or done. Focuses on who is requesting the action.
if requested
Shifts the phrase to a conditional statement, highlighting that the provision of something depends on whether a request is made.
on demand
Indicates immediate availability when asked for, suggesting a quicker or more readily accessible provision than "under request".
available if requested
Expands the phrase to explicitly state availability and the condition of a request, making it more descriptive.
obtainable by request
Highlights the possibility of obtaining something through a request, focusing on the action of acquiring.
subject to request
Implies that something is governed by or contingent upon a request, suggesting a formal or procedural requirement.
as requested
Focuses on the fulfillment of a previous request, rather than the potential for future requests.
upon application
The phrase implies a more formal process than a simple request. Focuses on a formal procedure.
if required
Suggests something is available only when a need is demonstrated. Focuses on demonstrating the need, rather than making a request.
FAQs
How can I use "under request" in a sentence?
You can use "under request" to indicate that something is available if someone asks for it. For example, "Additional data is available under request from the corresponding author."
What does "available under request" mean?
It means that something, such as information or materials, can be obtained by asking for it. It implies that it won't be automatically provided, but will be given if someone specifically requests it.
What are some alternatives to "under request"?
Some alternatives include "upon request", "by request", or "if requested". The best choice depends on the specific context.
When should I use "under request" instead of "on demand"?
"Under request" should be used when something is available but requires a specific request to obtain it. "On demand"/s/on+demand implies immediate and automatic availability. If there's a delay or a required action (like sending an email) to get something, "under request" is more suitable.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.3/5
Expert rating
Real-world application tested