How can we Create or Update Constrained LOV using REST API ?
As per the Following Note ID released in 2022, there is no way to Create or Update quality Characteristics with LOV using REST API. Please Confirm is there is any approach /way to update the LOV using REST API.
Create Or Update Constrained LOV Using REST API (Doc ID 2907348.1)
How can we Create or Update Constrained LOV using REST API ?
There is no way as per the current design to do this.
You can raise a Product Enhancement inside the Customer Connect for a PM to review.
For more details, please refer to: How To Log An Enhancement Request (in Idea Labs) (Note: 2254478.1) .