# Problems with adding dsdl

**URL:** <https://forum.opencyphal.org/t/problems-with-adding-dsdl/2085>\
**Category:** Yukon\
**Created:** [February 26, 2024, 7:33am UTC](https://forum.opencyphal.org/t/problems-with-adding-dsdl/2085 "2024-02-26T07:33:22Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![pavel.kirienko](https://forum.opencyphal.org/user_avatar/forum.opencyphal.org/pavel.kirienko/32/9_2.png) [@pavel.kirienko](https://forum.opencyphal.org/u/pavel.kirienko)\
**Post date:** [February 28, 2024, 10:00am UTC](https://forum.opencyphal.org/t/problems-with-adding-dsdl/2085/2 "2024-02-28T10:00:45Z")

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> [@Ozoni](#):
>
> I created a message with ID 6144

Please don’t do that. This ID is reserved for non-standard public regulated data types. See [GitHub - OpenCyphal/public\_regulated\_data\_types: Regulated DSDL definitions for Cyphal (standard and third-party)](https://github.com/OpenCyphal/public_regulated_data_types/tree/master?tab=readme-ov-file#subjects)

Yukon does not support unregulated fixed port-IDs at the moment; this is intentional as fixed port-IDs are prone to causing numerous design issues. More on this here:

- [Cyphal vs. DroneCAN](https://forum.opencyphal.org/t/cyphal-vs-dronecan/1814)
- [Choosing Message and Service IDs](https://forum.opencyphal.org/t/choosing-message-and-service-ids/889)

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