Is your feature request related to a problem? Please describe
Following #1398, we should make addition_limit optional rather than required.
Describe the solution you'd like
We should allow either total_capacity_limit or addition_limit to be empty, but not both (if both were empty, the user should just omit the row for that process/region/year)
Describe alternatives you've considered
None
Additional context
Likely also want to consider capacity growth limit here
Is your feature request related to a problem? Please describe
Following #1398, we should make addition_limit optional rather than required.
Describe the solution you'd like
We should allow either total_capacity_limit or addition_limit to be empty, but not both (if both were empty, the user should just omit the row for that process/region/year)
Describe alternatives you've considered
None
Additional context
Likely also want to consider capacity growth limit here