Q: S5731S-H24T4X-A , is there 16 AP's management authorization by default?

A: The product documentation says it comes with 16 licenses by default, as follows:

https://support.huawei.com/hedex/hdx.do?docid=EDOC1100333028&id=ZH-CN_CONCEPT_0177109567

License Support

When the device is used as a WLAN AC, the number of supported online APs is controlled by the license. Before loading the license, the device can support up to 16 APs online, if you need to increase the number of online APs, please contact the agent to apply and purchase the license:

WLAN Wireless Access Controller AP Resource License-1AP

WLAN Wireless Access Controller AP Resource License-16AP

WLAN Wireless Access Controller AP Resource License -32AP

WLAN Wireless Access Controller AP Resource License-64AP

WLAN Wireless Access Controller AP Resource Authorization-128AP

WLAN Wireless Access Controller AP Resource License - 512AP

For the license application method, please refer to "Applying for License" in the "S1720, S5700, S6700 Series Switches License User's Guide".