# Context
- https://digital.dclg.gov.uk/jira/browse/CLDC-2316
- Implement bulk upload sales for new collection year 2023
- This is a first pass implementation and will probably have some bugs in it and we can address over time
# Changes
- Add CSV parser for sales 2023 to handle CSV structure
- Tweak collection window validation so error now contextual to year selected for upload
- Handle arbitrary ordering of CSV columns
- Fix ordering of errors in report and now ordered by cell
- Added `Upload your file again` link styled as button on error report to match lettings experience
- Update tooling to convert logs to 2023 csv rows with support for random column ordering
# Known issues
- There seem to be some issues with how UPRN is handled if the UPRN cannot be validated.
- For the above I think there is dependency on https://github.com/communitiesuk/submit-social-housing-lettings-and-sales-data/pull/1570 which should clear any errored fields so users can continue to create logs and fix within the service
# Context
- Partially related to https://digital.dclg.gov.uk/jira/browse/CLDC-2316
- Comprehending sales or lettings bulk upload CSV is enough, comprehending both simultaneously is rather challenging
# Changes
- Split out test helper class by log type ie lettings/sales
Phil Lee