The maximum allowed according to NJ Division of Taxation - Other Credits (UI/DI/FLI) - NJ.gov is $179.78.
If you had multiple jobs and exceeded the limits, a credit can be calculated. However, since it is from one employer, you should request a refund rather than enter it in the program.
NJ Glossary states:
Commonly grouped together as Unemployment Insurance (UI), Workforce Development Partnership Fund (WF) and Supplemental Workforce Fund (SWF). These contributions are withheld from your wages by your employer. Your employer may report these contributions in Box 14 on your W-2. UI/WF/SWF are not your income tax withholdings.
Note: If multiple employers withhold more than the maximum UI/WF/SWF amount allowed, you may be eligible for a credit. If a single employer over withholds you must obtain a refund from the employer. See NJ Income Tax - Other Credits (UI/DI/FLI) for more information.
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