Your data has issues

There is a problem

• 4 entries must have dates in YYYY-MM-DD format

Reference	Name	Organisation	Site address	Point	Site plan URL	Hectares	Ownership status	Planning permission status	Planning permission type	Planning permission date	Planning permission history	Deliverable	Minimum net dwellings	Maximum net dwellings	Hazardous substances	Notes	Start date	Entry date	End date
2016/1930	2016/1930		Tower Court, Clapton Common E5 9AJ	POINT(-0.068058 51.57304)	https://map.hackney.gov.uk/LBHackneymap/?zoom=14&lon=533980&lat=187787	0.7	unknown	permissioned	full-planning-permission	Invalid date				65			2019-01-31	2019-01-31
2017/2074	2017/2074		59-61 Kingsland High Street E8 2JS	POINT(-0.075712 51.548284)	https://map.hackney.gov.uk/LBHackneymap/?zoom=14&lon=533522&lat=185020	0.01	unknown	permissioned	full-planning-permission	Invalid date				6			2019-01-31	2019-01-31
2017/3864	2017/3864		Sir John And Lady Cohen Court Rookwood Road N16 6SD	POINT(-0.067821 51.574205)	https://map.hackney.gov.uk/LBHackneymap/?zoom=14&lon=533993&lat=187917	0.03	unknown	permissioned	full-planning-permission	Invalid date				6			2019-01-31	2019-01-31
2018/1060	2018/1060		The Windsor Castle 135 Lower Clapton Road E5 8EQ	POINT(-0.053346 51.552905)	https://map.hackney.gov.uk/LBHackneymap/?zoom=14&lon=535059lat=185575	0.07	unknown	permissioned	full-planning-permission	Invalid date				6			2019-01-31	2019-01-31

How to fix this issue

Your dataset is missing the PermissionDate column.

The Brownfield land guidance explains how to fix the issue:

PermissionDate

How to improve London Borough of Hackney’s data

1. Fix the errors indicated
2. Use the check service to make sure the data meets the standard
3. Publish the updated data on the endpoint URL