I am using Windchill MPMLink Release 11.0 and Datecode with CPS M030-CPS11
Is it possible to make changes to "Any-level Occurrence Assignment" after creating a process plan
创建工艺计划后 “任意级别具体值分配” ，是否可以进行更改
Translated with Google Translate
Translated by Corina Ionescu, on April 18th 2022
No it is not possible by user interface.
If you have access to a database then you could change it directly by sql command. But I don't know consequences what the change may case.
As stated in knowledge database article CS278222: This attribute (Occurrence Allocation From Any Level) value cannot be changed once the Process Plan has been created.
I remain at your disposal for any questions or concerns.