Help with Record Type Relationship Error on Save

Question

Hi everyone, 
 I&rsquo;m working on my first Appian build and ran into an issue I haven&rsquo;t been able to resolve. My save logic seems to save correctly to ri!record , but I&rsquo;m getting an error related to the record type relationships. 
 
 Could not display interface. Please check definition and inputs. Interface Definition: Expression evaluation error: xxxx must be indexed by its corresponding record type fields or relationships

I suspect the issue is tied to how my record type relationships are configured, but I haven&rsquo;t been able to figure it out. 
 Has anyone encountered similar issues with saving data to a record type and relationship errors? I&rsquo;d really appreciate any guidance on reviewing or troubleshooting the save logic and relationships. 
 Thanks in advance!

Shubham Aware · Accepted Answer

You first try this common fix with this type of generic issue, Change ri!record.fieldName or ri!record[fieldName] to ri!record[recordType!YourRecord.fields.fieldName] -> you must use record type field references.​​​ 
 Still could you share code snippet for better understanding if above basic change will not work.

Stefan Helzle · Answer

This is the documentation, explaining how to reference records. 
 https://docs.appian.com/suite/help/25.3/reference-records.html

Jesse Knight · Answer

Hi David, I've seen this before with folks coming up to speed on records, even if they're veteran Appian developers. The 'base' record you start your referencing from might change depending on context. For a a!save(ri!record{...}, ) , your 'base' record will always be the record type of the rule input rather than the record type of the relationship. For example, say I have a rule input of recordType!Transaction, with a related record 'account', and I want to update 'amount' in the account record, then I would do a!save(ri!record[recordType!Transaction.account.amount], ) . Where this can get really confusing for folks new to records - say I wanted to create a "new" record in the related record, using the structure above I would do something like: a!save(ri!record[recordType!Transaction.account], recordType!Account(

Shubham Aware · Answer

You&rsquo;re updating with raw field names instead of the record type field references. 
 Use recordType!UC2335TinaSweep_uc2335DisclosureLog.fields.<fieldName> in a!update().

Help with Record Type Relationship Error on Save

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