Steps to reproduce:

1. Use template from https://www.zabbix.com/integrations/hikvision
2. Test the item hikvision_cam.memory.usage with the following data: 

   {"DeviceStatus":{"@version":"1.0","currentDeviceTime":"2024-07-10T20:26:29+08:00","deviceUpTime":"7045303","CPUList":{"CPU":{"cpuDescription":"3000.00","cpuUtilization":"6"}},"MemoryList":{"Memory":{"memoryDescription":"DDR Memory","memoryUsage":"\n343.164063","memoryAvailable":"\n1165.734375"}}}}

Result:

• Item gets no result.
• Looking at the data this is due to a \n before the memoryUsage. This might be an issue on my hardware so I'll remove it manually and re run the test.
• Then the item gets 343.164063 and not a % value as result.

Expected:
As per documentation we should have "Memory utilization in %".

Hint:

There is a weird "\n" in the device fetched. Putting this aside the item result is not aligned with the docs.