Where can I find a complete list of possible errors with their decoding!? to understand what 38c4, 2842, 2843 and so on mean!? where can I find complete information on error handling using OB86?

What are the rules and decoding methods for a data packet from the diagnostic buffer?
"
Event 1 of 10: Event ID 16# 2943
I/O access error, writing
P area, word access, Access address: 144
Requested OB: I/O access error OB (OB122)
Priority class: 1
External error, Incoming event
03:14:25.712 PM 07/14/2025
(Coding: 16# 2943 017A 0020 0090 0000 0000)
"
For example - what is what here and how to read it?
Where can I find a description for this structure and all possible error codes!?

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Split from I have error code 2943 & 38c4.