I have done as the link below:https://pro.arcgis.com/en/pro-app/latest/help/mapping/layer-properties/editing-workflows.htm
Stop the services:
When add to Arcgis Pro:
Cannt add field with geoprocessing tool:
If anyone know where I went wrong and let I can update shcema of it?
Have you double-checked that the layer is editable? I've come across a similar error for hosted feature layers I forgot to make editable. I've also found that sometimes you have to add fields through the Portal item details page instead of Pro (at least for hosted feature layers), unfortunately.
This error page might help you pinpoint the problem too - https://pro.arcgis.com/en/pro-app/latest/tool-reference/tool-errors-and-warnings/001001-010000/tool-...
Thank you AbigailStephens.
I have made it editable when publish it like below screendump:
I tested it immediately after published it, so should have no lock on the schema.
And I have seen a link whicn said:
My situation is that we have a feature layer accotiated with our web scene layer, do not know if it affect.