Hi Aleksei,
Given this is "working material', you need to be a member of the ISA project to view it. Given the message you are getting, I expect you are not.
May I suggest using the following link (https://myaccount.tmforum.org/joinproject), then select "Information systems architecture". You should then be able to access the link above.
Following is a sample of what you will find...

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Kevin Scaggs
TM Forum
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Original Message:
Sent: Apr 01, 2024 08:45
From: Aleksei Golovin
Subject: Process and ABE relationships
Hi, Kevin!
Thank you!
I can't open your link. "Page not found" error. Maybe I don't have access.
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Aleksei Golovin
Bercut LLC
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Original Message:
Sent: Apr 01, 2024 08:17
From: Kevin Scaggs
Subject: Process and ABE relationships
Hi Aleksei,
As you may know, mappings have been made between the Business Process Framework (eTOM) and the Information Framework (SID) for a couple of decades. Until recently, these two models have resided in different tools, so the mappings were done in a document table (see GB991 Release 22.5, Section 2) separate from either model, making it difficult to keep the relationships up to date.
With MODA, these two models are now in the same tool, efforts have been made to update these relationships, but they have not approved, and therefore are not being published. Also, as part of this update effort, it was decided to only maintain the "primary" relationships (see GB991 for definitions of primary and secondary).
The "draft" relationships can be seen per the following link: https://projects.tmforum.org/wiki/pages/viewpage.action?pageId=245308139
I hope this helps!
Regards,
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Kevin Scaggs
TM Forum