Access Condition for Cross-Module SoD Rule (GL FA) – How to Define Common Data Security Context

Summary:

Hi Experts,

We have a requirement to define an SoD rule in AAC

SOD : Enter Journals and Asset Depreciation

For intra-module SoD (e.g., Create Invoice and Create Payment), we use Business Unit as the access condition (data security context).
However, for this cross-module scenario (GL + FA), we need to restrict the SoD conflict only when access is within the same region (e.g., US).

Business requirement:

User has access to:
Enter Journals for US Primary Ledger
Asset Depreciation for US Asset Book
Conflict should trigger only if both belong to the same region (US)

Please help me with what is the recommended approach to define access condition filters for cross-module SoD rules?