inconsistency

US /ˌɪn.kənˈsɪs.tən.si/
UK /ˌɪn.kənˈsɪs.tən.si/
1.

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the fact of containing some ideas, statements, arguments, etc. that do not agree with others, or something such as an idea, statement, or argument that has this quality:

:
There are a few inconsistencies in what you've written.