# Task Planning Specification questions

**URL:** https://discourse.openehr.org/t/task-planning-specification-questions/867
**Category:** Task Planning/GDL
**Created:** [13 July 2020 10:35 UTC](https://discourse.openehr.org/t/task-planning-specification-questions/867 "2020-07-13T10:35:26Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Cristiana\_Neto](https://discourse.openehr.org/user_avatar/discourse.openehr.org/cristiana_neto/32/419_2.png) [@Cristiana\_Neto](https://discourse.openehr.org/u/Cristiana_Neto)
#### Post date: [13 July 2020 10:35 UTC](https://discourse.openehr.org/t/task-planning-specification-questions/867/1 "2020-07-13T10:35:26Z")

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Hello,  
During an analysis of the [TP specification](https://specifications.openehr.org/releases/PROC/latest/task_planning.html), some questions arose that I would like to discuss:

1. The class CALENDAR\_ENTRY has no properties in the specification. I think it would be pertinent to specify these properties since it seems incomplete. What do you think?
2. The class M\_CALLBACK is not defined in the specifications despite being defined in [JSON](https://specifications.openehr.org/releases/ITS-JSON/latest/components/PROC/latest/Materialised/M_CALLBACK.json). Is there any reason for this?

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### Author: ![thomas.beale](https://discourse.openehr.org/user_avatar/discourse.openehr.org/thomas.beale/32/35_2.png) [@thomas.beale](https://discourse.openehr.org/u/thomas.beale)
#### Post date: [14 July 2020 11:37 UTC](https://discourse.openehr.org/t/task-planning-specification-questions/867/2 "2020-07-14T11:37:08Z")

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Hi Cristiana,  
Yes, the CALENDAR\_ENTRY type needs a bit more work.

The M\_\* classes are less reliable than the main definitional classes, and we are debating about whether to even keep them in the spec.

If you would like to follow / participate in the ongoing TP/GDL discussions, please do so on the #taskplanning channel in [openEHR specifications Slack](https://openehrspecs.slack.com), and also follow this Discourse category. More participants are very welcome.

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### Author: ![Cristiana\_Neto](https://discourse.openehr.org/user_avatar/discourse.openehr.org/cristiana_neto/32/419_2.png) [@Cristiana\_Neto](https://discourse.openehr.org/u/Cristiana_Neto)
#### Post date: [14 July 2020 14:56 UTC](https://discourse.openehr.org/t/task-planning-specification-questions/867/3 "2020-07-14T14:56:10Z")

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Thank you for your reply.  
It would be great to have access to that discussion. Can you please send me an invitation (cristiana.neto@algoritmi.uminho.pt) so that I can access Slack?