Technicality (noun)

A minor detail or point in a legal or technical subject, often used to make a distinction or as a means of evading a rule or regulation.

Origin:

From technical + -ity.

Examples:

1. The lawyer used a technicality to get his client out of the charges.
2. The company was able to avoid the fine by using a technicality in the contract.
3. The athlete was disqualified for a technicality in the rules.
4. The decision was overturned on a technicality.
5. The technicality in the procedure was not followed.