Dear friend!
The possible causes and handling suggestions are as follows:
1. Check whether the communication between the U2000 and the NE is abnormal. If the communication is abnormal, rectify the fault.
2. The method for creating the NE is incorrect. For example, the process is incorrect, the user name, password, or NE ID is incorrect. Perform the operation according to the correct method and enter the correct parameters.
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100007632&id=t_cjdgwyuan_trans&lang=en
3. The U2000 does not have a license file for managing OSN 1800 IE. Contact the local Huawei dealer to purchase the license file,
4. The software version of the U2000 does not match that of the OSN 1800 IE. Click the following link to continue the check.
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100007632&id=uc_pd_00108&lang=en
5. The U2000 user rights are restricted. Log in to the U2000 as a user of the operator level or higher.
6. The U2000 or OSN 1800 IE does not work properly. If yes, you can configure the fault by restarting the board or replacing the board. But the probability is low.
Thanks!