Hi Dipanjali,
Field is read-only and shouldn't be updated by users. Here is a scenario that help explain the usage:
1. Create a number sequence, default in-use is No.
2. use the number sequence, in my example, created a production order.
3. go back to number sequence. the next number is updated as well as "in-use" is marked.
Can you tell us - Why do you want to update this field and set it to yes? Is there a specific business requirement that you are trying to solve using this check-box ? We can obviously search and tell you tables/way to get this updated but won't be recommended.
Thanks,
Satish Panwar
Please take time to click 'Yes' against the answers that help you guide in right direction to help other community members.