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Reference	Name	Designation date	Document URL	Documentation URL	Geometry	Point	Entry date	Start date
CA/E/1	ALDBOURNE	Invalid date	https://wiltshire.my.salesforce.com/sfc/p/3z000001ei8O/a/Q300000451Z3/e7OYBdNifvvIFOw66wYAxh8a0yD8ctK6xkeOeOWt3BE	https://www.wiltshire.gov.uk/planning-conservation-areas	MULTIPOLYGON (((-1.620441 51.481850,-1.620409 51.481943,-1.620530 51.481940,-1.620573 51.481822,-1.620696 51.481935,-1.620820 51.482072,-1.621124 51.481967,-1.621416 51.481855,-1.621578 51.481778,-1.621768 51.481672,-1.621855 51.481638,-1.622058 51.481562,-1.622507 51.481425,-1.623311 51.481291,-1.623421 51.481258,-1.623422 51.481241,-1.623641 51.481215,-1.624141 51.481125,-1.624306 51.481122,-1.624696 51.481159,-1.625018 51.481216,-1.625326 51.481300,-1.626557 51.479779,-1.626787 51.479846,-1.627250 51.480001,-1.628020 51.480279,-1.628816 51.479525,-1.629117 51.479348,-1.629077 51.479331,-1.628839 51.479288,-1.628490 51.479185,-1.628335 51.479150,-1.627435 51.479012,-1.626599 51.478836,-1.626656 51.478659,-1.626548 51.478651,-1.625545 51.478506,-1.625399 51.478493,-1.624664 51.478383,-1.623988 51.478249,-1.623531 51.478174,-1.623344 51.478127,-1.623190 51.478122,-1.623132 51.478103,-1.623062 51.478148,-1.623012 51.478060,-1.623017 51.478059,-1.622834 51.477914,-1.622802 51.477922,-1.622703 51.477786,-1.622589 51.477592,-1.622497 51.477469,-1.622387 51.477288,-1.622273 51.477152,-1.622165 51.477053,-1.622092 51.477000,-1.621941 51.476928,-1.621604 51.476836,-1.621339 51.476751,-1.621520 51.476660,-1.621472 51.476589,-1.621421 51.476574,-1.620760 51.476457,-1.620560 51.476380,-1.620514 51.476380,-1.620361 51.476235,-1.620292 51.476232,-1.620142 51.476264,-1.620133 51.476248,-1.620061 51.476246,-1.619974 51.476263,-1.619927 51.476216,-1.619857 51.476110,-1.619819 51.475990,-1.619817 51.475930,-1.618829 51.476424,-1.618617 51.476521,-1.618831 51.476710,-1.618411 51.477172,-1.618112 51.477269,-1.617905 51.477357,-1.617712 51.477452,-1.617685 51.477425,-1.617643 51.477417,-1.617444 51.477214,-1.617348 51.477133,-1.616927 51.476712,-1.616775 51.476805,-1.616912 51.476973,-1.617052 51.477129,-1.617546 51.477593,-1.617547 51.477650,-1.617653 51.477815,-1.616887 51.478132,-1.617396 51.478504,-1.616948 51.478759,-1.616780 51.478840,-1.616395 51.478967,-1.616485 51.479064,-1.617070 51.479551,-1.617142 51.479517,-1.617608 51.479939,-1.617748 51.480153,-1.617842 51.480281,-1.617859 51.480393,-1.617833 51.480404,-1.617738 51.480355,-1.617577 51.480505,-1.617389 51.480708,-1.617303 51.480787,-1.617175 51.480888,-1.616868 51.481192,-1.617013 51.481251,-1.616937 51.481344,-1.617150 51.481183,-1.617273 51.481249,-1.617604 51.481271,-1.618218 51.481278,-1.618250 51.481207,-1.618329 51.481175,-1.618452 51.481149,-1.618660 51.481141,-1.618888 51.481143,-1.618903 51.481163,-1.619025 51.481199,-1.619364 51.481346,-1.619397 51.481255,-1.619396 51.481198,-1.619446 51.481140,-1.619553 51.481197,-1.620513 51.481599,-1.620441 51.481850)))	POINT (-1.62162 51.479266)	2026-04-22	1973-01-30
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CA/E/143	MARLBOROUGH	Invalid date	https://wiltshire.my.salesforce.com/sfc/p/3z000001ei8O/a/Q30000045T2H/GRDBjrlJKF6ibP2Gcvq6tc3oMEpDLYapBnF6zTBAEIY	https://www.wiltshire.gov.uk/planning-conservation-areas	MULTIPOLYGON (((-1.730978 51.424114,-1.731096 51.424188,-1.731271 51.424098,-1.731289 51.424098,-1.731651 51.423877,-1.731667 51.423886,-1.731749 51.423824,-1.731721 51.423819,-1.731810 51.423724,-1.731708 51.423677,-1.731466 51.423530,-1.730975 51.423199,-1.731628 51.422887,-1.731657 51.422866,-1.731677 51.422831,-1.731741 51.422619,-1.731777 51.422444,-1.731767 51.422408,-1.731622 51.422300,-1.731861 51.422168,-1.731729 51.422066,-1.731459 51.421783,-1.731343 51.421696,-1.731182 51.421607,-1.731351 51.421525,-1.731376 51.421506,-1.731551 51.421443,-1.731524 51.421424,-1.731650 51.421359,-1.731615 51.421333,-1.731552 51.421308,-1.731647 51.421257,-1.732022 51.421507,-1.732117 51.421452,-1.731671 51.421165,-1.731763 51.421105,-1.731750 51.421098,-1.731846 51.421038,-1.732000 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CA/E/211	URCHFONT	Invalid date	https://wiltshire.my.salesforce.com/sfc/p/3z000001ei8O/a/Q30000045TYX/qYwgEKgSAO.J4ctI.SnoxVJZYedGY56d6o6kCSK73YA	https://www.wiltshire.gov.uk/planning-conservation-areas	MULTIPOLYGON (((-1.943421 51.314979,-1.943611 51.315330,-1.943985 51.315275,-1.944078 51.315269,-1.944433 51.315276,-1.944541 51.315423,-1.944582 51.315451,-1.945161 51.315671,-1.945354 51.315565,-1.945575 51.315414,-1.945700 51.315360,-1.945729 51.315241,-1.945733 51.315177,-1.945769 51.315135,-1.945797 51.315084,-1.945797 51.315070,-1.945882 51.315016,-1.945930 51.314786,-1.945943 51.314521,-1.946672 51.314512,-1.946709 51.314451,-1.947493 51.314450,-1.947488 51.314265,-1.947801 51.314253,-1.948176 51.314255,-1.948276 51.314246,-1.948650 51.314175,-1.949061 51.314727,-1.949552 51.314568,-1.949604 51.314689,-1.949685 51.314841,-1.949761 51.314885,-1.949799 51.314946,-1.950315 51.314832,-1.950454 51.314792,-1.950871 51.314715,-1.950836 51.314643,-1.950924 51.314631,-1.950839 51.314483,-1.950653 51.314223,-1.950500 51.314048,-1.950314 51.313862,-1.950003 51.313896,-1.950029 51.313918,-1.949836 51.313953,-1.949778 51.313972,-1.949515 51.314017,-1.949370 51.314026,-1.949266 51.314011,-1.949205 51.313791,-1.949122 51.313577,-1.948994 51.313336,-1.948911 51.313206,-1.948810 51.313015,-1.948747 51.312791,-1.949677 51.312698,-1.949753 51.312875,-1.951001 51.312667,-1.951321 51.312599,-1.951636 51.312556,-1.951425 51.312187,-1.951289 51.312083,-1.951080 51.311307,-1.951138 51.311138,-1.951146 51.310987,-1.951127 51.310864,-1.951046 51.310662,-1.950962 51.310541,-1.950543 51.310106,-1.950414 51.310011,-1.950356 51.310033,-1.950318 51.310012,-1.950241 51.310000,-1.950202 51.310003,-1.949107 51.310310,-1.948221 51.310546,-1.948203 51.310536,-1.948112 51.310564,-1.948082 51.310582,-1.948050 51.310618,-1.948086 51.310706,-1.948244 51.311195,-1.948287 51.311218,-1.948477 51.311832,-1.948492 51.311912,-1.948486 51.311980,-1.948452 51.312008,-1.948410 51.312098,-1.948194 51.312458,-1.948179 51.312492,-1.948214 51.312496,-1.948213 51.312513,-1.948031 51.312453,-1.948004 51.312424,-1.947905 51.312428,-1.947796 51.312385,-1.947627 51.312388,-1.947583 51.312364,-1.947184 51.312503,-1.947456 51.312710,-1.947202 51.312812,-1.946855 51.312934,-1.946744 51.312894,-1.946612 51.312917,-1.946599 51.312934,-1.945890 51.313061,-1.945862 51.313006,-1.945500 51.313036,-1.944687 51.313086,-1.944652 51.312949,-1.944565 51.312462,-1.944567 51.312221,-1.944479 51.311224,-1.944479 51.310845,-1.944371 51.310804,-1.944310 51.310739,-1.944300 51.310718,-1.944128 51.310652,-1.944073 51.310608,-1.944029 51.310592,-1.943163 51.310483,-1.943040 51.310924,-1.943050 51.311147,-1.943044 51.311176,-1.942812 51.311150,-1.942419 51.311169,-1.942149 51.311218,-1.942074 51.311810,-1.942137 51.311913,-1.942059 51.312095,-1.942023 51.312227,-1.941914 51.312389,-1.941876 51.312507,-1.941860 51.312690,-1.941762 51.312846,-1.941782 51.312965,-1.941785 51.313068,-1.941775 51.313193,-1.941690 51.313195,-1.941623 51.313210,-1.941548 51.313252,-1.941512 51.313252,-1.941452 51.313303,-1.941195 51.313244,-1.941161 51.313190,-1.941087 51.313295,-1.941132 51.313409,-1.941226 51.313545,-1.941346 51.313941,-1.941363 51.313964,-1.941479 51.314056,-1.941654 51.314241,-1.941644 51.314261,-1.941690 51.314356,-1.941739 51.314487,-1.941736 51.314564,-1.941713 51.314626,-1.941681 51.314678,-1.941588 51.314792,-1.941533 51.314832,-1.941513 51.314908,-1.941554 51.315015,-1.941556 51.315057,-1.941611 51.315177,-1.942236 51.315019,-1.942385 51.314987,-1.942614 51.314959,-1.942627 51.315001,-1.942812 51.315004,-1.943037 51.314973,-1.943311 51.314904,-1.943317 51.314914,-1.943384 51.314898,-1.943421 51.314979)))	POINT (-1.946146 51.31297)	2026-04-22	1968-06-26
CA/E/172	RAMSBURY	Invalid date	https://wiltshire.my.salesforce.com/sfc/p/3z000001ei8O/a/Q30000045TyL/goRT.W1_EsZVb_5dopQFGkrHWO7KE_Hl3N.AVwna1Do	https://www.wiltshire.gov.uk/planning-conservation-areas	MULTIPOLYGON (((-1.600426 51.445320,-1.600299 51.445343,-1.600288 51.445726,-1.600354 51.445720,-1.600454 51.445695,-1.600697 51.445660,-1.601186 51.445570,-1.601632 51.445421,-1.601723 51.445397,-1.601582 51.445099,-1.601927 51.445056,-1.601854 51.444829,-1.601828 51.444718,-1.602860 51.444570,-1.602873 51.444631,-1.603013 51.444607,-1.602849 51.444045,-1.603023 51.444040,-1.603376 51.443989,-1.603406 51.443966,-1.603380 51.443904,-1.603671 51.443862,-1.603701 51.443958,-1.603853 51.444001,-1.604002 51.443986,-1.604011 51.443951,-1.604164 51.443935,-1.604222 51.443939,-1.604255 51.444029,-1.604409 51.443995,-1.604433 51.444080,-1.604523 51.444071,-1.604578 51.444209,-1.604413 51.444244,-1.604413 51.444282,-1.604394 51.444299,-1.604362 51.444309,-1.604370 51.444359,-1.604277 51.444368,-1.604330 51.444461,-1.604417 51.444700,-1.604478 51.444898,-1.604560 51.445098,-1.604599 51.445162,-1.604631 51.445245,-1.604875 51.445207,-1.604873 51.445194,-1.605118 51.445157,-1.605121 51.445171,-1.605163 51.445167,-1.605157 51.445151,-1.605623 51.445087,-1.605664 51.445097,-1.605932 51.445078,-1.606951 51.444895,-1.607264 51.444819,-1.607377 51.444776,-1.607390 51.444733,-1.607381 51.444651,-1.607360 51.444588,-1.607340 51.444420,-1.607347 51.444385,-1.607326 51.444278,-1.607516 51.444189,-1.607661 51.444234,-1.607976 51.444283,-1.608653 51.444225,-1.608689 51.444209,-1.609332 51.444099,-1.609417 51.444080,-1.609410 51.444056,-1.609996 51.443918,-1.610330 51.443852,-1.610132 51.443518,-1.610034 51.443374,-1.609991 51.443331,-1.610042 51.443328,-1.610080 51.443340,-1.610154 51.443329,-1.610157 51.443316,-1.610169 51.443311,-1.610466 51.443275,-1.610632 51.443247,-1.610795 51.443209,-1.611164 51.443088,-1.611168 51.443068,-1.611186 51.443056,-1.611591 51.442909,-1.611597 51.442900,-1.611844 51.442800,-1.611851 51.442756,-1.611877 51.442735,-1.611978 51.442685,-1.612284 51.442487,-1.612442 51.442624,-1.612494 51.442703,-1.612832 51.442628,-1.612864 51.442612,-1.612995 51.442588,-1.613024 51.442567,-1.613038 51.442519,-1.613018 51.442440,-1.612944 51.442305,-1.612900 51.442257,-1.612831 51.442207,-1.613084 51.442138,-1.613383 51.442068,-1.613363 51.441974,-1.613332 51.441923,-1.613264 51.441758,-1.613188 51.441730,-1.613136 51.441743,-1.612835 51.441483,-1.612712 51.441402,-1.612920 51.441295,-1.612814 51.441103,-1.612845 51.440931,-1.612869 51.440897,-1.612642 51.440955,-1.612581 51.440890,-1.612529 51.440861,-1.612328 51.440829,-1.612331 51.440521,-1.612228 51.440760,-1.612155 51.440877,-1.612196 51.440948,-1.612262 51.441120,-1.612282 51.441117,-1.612290 51.441143,-1.612277 51.441159,-1.612154 51.441139,-1.612121 51.441123,-1.612089 51.441095,-1.612058 51.441085,-1.611930 51.441092,-1.611538 51.441205,-1.611338 51.441244,-1.610733 51.441337,-1.610494 51.441389,-1.610360 51.441405,-1.609374 51.441456,-1.609286 51.441476,-1.608963 51.441592,-1.608783 51.441639,-1.608745 51.441640,-1.608620 51.441619,-1.608321 51.441557,-1.608238 51.441548,-1.607925 51.441544,-1.607769 51.441517,-1.607226 51.441454,-1.606685 51.441475,-1.606579 51.441467,-1.606448 51.441441,-1.606078 51.441291,-1.606008 51.441272,-1.605929 51.441268,-1.605873 51.441279,-1.605700 51.441346,-1.605592 51.441375,-1.605442 51.441400,-1.605225 51.441412,-1.605028 51.441447,-1.604932 51.441471,-1.604695 51.441552,-1.604432 51.441614,-1.604048 51.441741,-1.603622 51.441857,-1.603085 51.442055,-1.602834 51.442159,-1.602526 51.442270,-1.602451 51.442288,-1.602343 51.442229,-1.602368 51.442199,-1.602338 51.442177,-1.602296 51.442166,-1.602203 51.442154,-1.601752 51.442061,-1.601565 51.442034,-1.601433 51.442027,-1.601186 51.442032,-1.601160 51.442051,-1.601153 51.442085,-1.601192 51.442115,-1.601628 51.442229,-1.601800 51.442297,-1.601975 51.442324,-1.601997 51.442363,-1.601802 51.442377,-1.601624 51.442362,-1.601031 51.442343,-1.600596 51.442417,-1.600407 51.442462,-1.600497 51.442586,-1.600464 51.442598,-1.600519 51.442709,-1.600407 51.442710,-1.600410 51.442783,-1.600430 51.442794,-1.600402 51.443456,-1.600387 51.443485,-1.600391 51.443641,-1.600424 51.443818,-1.600423 51.443922,-1.600432 51.443922,-1.600458 51.444291,-1.600472 51.444394,-1.600528 51.444615,-1.600362 51.444630,-1.600324 51.444604,-1.600258 51.444605,-1.600216 51.444642,-1.600139 51.444644,-1.600159 51.444758,-1.600240 51.444942,-1.600426 51.445320)))	POINT (-1.6062 51.443054)	2026-04-22	1973-01-30

How to fix this issue

Your dataset is missing the designation-date column.

The Conservation area guidance explains how to fix the issue:

designation-date

The date that the conservation area was officially designated, written in YYYY-MM-DD format.

Example:

1984-03-28

With dates, some data is better than no data, so:

1984 is fine
1984-03 is better
1984-04-28 is brilliant

How to improve Wiltshire Council’s data

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