# 2020-02-12 - Opportunity Specification Proposals

## Summary

A number of recently-proposed updates to the [Opportunity Specification ](https://www.openactive.io/modelling-opportunity-data/)were discussed, specifically:

* [dealing with](https://github.com/openactive/modelling-opportunity-data/issues/219) JSON-LD '@' prefixes
* ad-hoc [Event Locations](https://github.com/openactive/modelling-opportunity-data/issues/209)
* require [startDate and endDate to have a time component](https://github.com/openactive/modelling-opportunity-data/issues/208)
* [IndicativeOffers](https://github.com/openactive/modelling-opportunity-data/issues/207)
* [estimatedDuration](https://github.com/openactive/modelling-opportunity-data/issues/201)

 A summary of the call and follow-up actions can be found in the [Call Notes](https://docs.google.com/document/d/1-MKuP8asU35G0NXNLICu12q0mUwjTQCAWLilz50zY_M/edit?usp=sharing).

## Slides

{% embed url="<https://docs.google.com/presentation/d/119bVxjCEZfFvuLvQxEbcqqm-VNQQIhib2vE7AeOXKCI/edit?usp=sharing>" %}

## Video

{% embed url="<https://www.youtube.com/watch?v=gkw9tlI6EUg&feature=youtu.be>" %}