Hi Team,
I'm working on populating fields from my Snowflake Zero Copy Source, which is mapped to a Custom DMO (Profile type), onto the Contact page layout. This Custom DMO has a direct 1:1 relationship with the Individual DMO. And, the Account Contact DMO (Contact Object) also has a direct 1:1 relationship with the Individual DMO.
After unifying the Contacts, I'm unable to transfer attributes from the Custom DMO to the Contact page layout. These are the condition I have checked and my setup meets both of them i.e.,
- For the related list, I can only use either the Profile or Engagement DMO.
- The DMO used for the related list must undergo identity resolution and have an established relationship with the Individual DMO.
Are there any other conditions I should verify? Does a Zero Copy data source support Data Cloud related lists? Any insights from you all would be greatly appreciated!
Thank you.
The key condition you’re missing is that Salesforce Data Cloud related lists are only supported for ingested DMOs that have undergone identity resolution and are tied to the Individual DMO. Zero Copy sources can be mapped and unified, but they do not
currently support related lists on CRM page layouts.
Why Zero Copy Doesn’t Work for Related Lists
- Zero Copy = Federation, not ingestion
- Data Cloud registers external tables as Data Lake Objects (DLOs) and queries them in place.
- The data stays external; only metadata and query paths are stored.
- Related lists require ingested DMOs
- Related lists on CRM page layouts depend on identity resolution and relationships built on ingested DMOs.
- Federated (Zero Copy) DMOs don’t materialize inside Data Cloud, so they cannot be surfaced in related lists.
- Supported downstream features
- Zero Copy DMOs do work for segmentation, calculated insights, and identity resolution.
- They don’t support related lists or page layout rendering because those require local object materialization.
Glad to help! If this answers your question, please consider marking it as the Best Answer—it helps others in the community find the solution more easily. Thanks!
- Zero Copy = Federation, not ingestion
