N:1 Relationship between Letter Activity Entity and Attachments entity

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Posted on by KBISC

I am trying to add an attachment sub-grid to the Letter Activity Entity form.

I would like attachments for 'only related records' to show. However, the Attachments Entity is not available as a data source when the 'only related records' option is selected.

I think it may be because there isn't a relationship between the Letter Activity and the Attachments entity.

However, when I attempt to create a relationship between the two entities, the Attachments Entity is not showing up in the 'Related Entity' drop down to create the relationship.

How can I create a relationship between the Letter Entity and the Attachments entity?

There are existing relationship between the Appointments entity and Attachments entity, and also the Email entity and the Attachments entity - the behaviour type is 'system'.

Many thanks

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Ray 1,537 on at

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If you check about the metadata of Attachment entity, you will find that both "CanBeRelatedEntityInRelationship" and "CanBePrimaryEntityInRelationship" are false, so you can not create any relationship for this entity.

If you want some subgrid display related attachments, you may need to do it by HTML/Webresource.

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