# What is the component with the ID: ID\_SEQUENCER?

**URL:** <https://forum.uvvm.org/t/what-is-the-component-with-the-id-id-sequencer/122>\
**Category:** Utility Library\
**Tags:** question, logging\
**Created:** [November 9, 2020, 10:13am UTC](https://forum.uvvm.org/t/what-is-the-component-with-the-id-id-sequencer/122 "2020-11-09T10:13:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Eric](https://avatars.discourse-cdn.com/v4/letter/e/898d66/32.png) [@Eric](https://forum.uvvm.org/u/Eric)\
**Post date:** [November 9, 2020, 10:13am UTC](https://forum.uvvm.org/t/what-is-the-component-with-the-id-id-sequencer/122/1 "2020-11-09T10:13:25Z")

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Hi,

I see in almost all examples ID\_SEQUENCER enabled or disabled.  
I have a few qiestions:

- What is this component?
- Where to find information about it?
- Is this the main executor of UVVM?
- Is this name reserved?
- And is the ID\_SEQUENCER\_SUB related to it?

Rgds,  
Eric

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**Author:** ![Erick](https://avatars.discourse-cdn.com/v4/letter/e/bbce88/32.png) [@Erick](https://forum.uvvm.org/u/Erick)\
**Post date:** [November 9, 2020, 5:16pm UTC](https://forum.uvvm.org/t/what-is-the-component-with-the-id-id-sequencer/122/2 "2020-11-09T17:16:44Z")

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Hi,

The ID\_SEQUENCER does not represent any component, it is used in the test sequencer to print normal logs. You can find this and the rest of the message IDs in the adaptations\_pkg, there you can see a short description of each ID.  
As an example you can use the following in your test sequencer:

> ID\_LOG\_HDR, – ONLY allowed in test sequencer, Log section headers  
> ID\_LOG\_HDR\_LARGE, – ONLY allowed in test sequencer, Large log section headers  
> ID\_LOG\_HDR\_XL, – ONLY allowed in test sequencer, Extra large log section headers  
> ID\_SEQUENCER, – ONLY allowed in test sequencer, Normal log (not log headers)  
> ID\_SEQUENCER\_SUB, – ONLY allowed in test sequencer, Subprograms defined in sequencer

Best regards,  
Erick