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Home/ Questions/Q 7513105
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Editorial Team
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Editorial Team
Asked: May 30, 20262026-05-30T00:04:20+00:00 2026-05-30T00:04:20+00:00

^[A-Z0-9]*[ _][A-Z0-9]*$ space cannot be accepted either at the beginning or end. space cannot

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^[A-Z0-9]*[ _][A-Z0-9]*$

space cannot be accepted either at the beginning or end.
space cannot be accepted  at all instead of the value.
allow numbers and characters in the start and end.
allow hyphens in the middle not mandatory

All these values are accepted values

12345
ABC-12345
MM 1.8.10
530715 HS 9JAXXX4100
020-59898
HLXU1234

But when i type ABC BCD. It says it is not correct match

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  1. Editorial Team
    Editorial Team
    2026-05-30T00:04:21+00:00Added an answer on May 30, 2026 at 12:04 am
    ^[^ ]([\w- \.]+)[^ ]$
    

    [^ ] = cannot start or end with space

    ([\w- .]+) = all characters allowed (or in this case, \w, hyphen, space and dot)

    matches:
    ABC BCD

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