Is there upper limit on the number of related records fetched with dot operator on the parent record using record relationship? We see only10 records regardless of the total number of children records with one-to-many relationship.
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I too have experienced and that was also 10. But I think you will be able to change it. Adding a link and screenshot for your reference.
Link - docs.appian.com/.../fnc_system_relatedrecorddata.html
For reasons 10 is the maximum for related record data, and you're already getting the highest limit you can set. Perhaps in a future release Appian will bump it up, like they've been frequently doing for the number of rows that can be synched.