The phrase "a warning is displayed" is correct and usable in written English.
It can be used in contexts where you want to indicate that a warning message appears on a screen or in a document.
Example: "When the system encounters an error, a warning is displayed to alert the user."
Alternatives: "a warning appears" or "a warning message is shown."
If the optimization did not converge properly, a warning is displayed automatically.
If a student drags two variables to the "vary" field a warning is displayed that explains why this may not be the best strategy to follow.
A warning is displayed on the last five days of validity.
Any node in the hierarchy can be deleted and a warning is displayed to the user before the action is completed.
Should the model have not been updated for more than three months, a warning is displayed together with a link to the submission interface for the interactive modeling servers registered with PMP (for more details see 'Modeling servers and Quality estimation servers' and Table 1 for the list of providers).
A warning is displayed in either case, and options are also available to generate a detailed report of the ambiguous identifiers.. Thus, for the A1B example, the researcher can decide if they will map A1B to A1BG and SNTB1, and keep both genes in further analyses, or drop both out of further analyses, through choice of the option ALLOW_AMBIGUOUS_GENES.
Sequences longer than 5000 amino acids are truncated and a corresponding warning is displayed.
In this case a "inconsistency" warning is displayed for the node, and the user won't be allowed to run simulations of this set until the inconsistency is resolved.
When the model composition interface merges elements with differing attribute values, a list of warnings is displayed.
The location information is updated regularly and the relevant warnings are displayed on screen.
On one white canvas tent, posters with large warnings are displayed in English, Arabic, and Farsi warning refugees of the "deception, threats and violence" they face from people smugglers.
