Relationship link field issue

Hello i have an custom module amendment and have a relationship one to many mapped to another custom module approval records , so when i try to map a record it shows undefined please help or tell me where i could be going wrong ?

Screenshot 2025-06-03 172810

Is it text field? Is your another module is custom too?

No it is a link field that is created from one to many relationship and my another module is custom as well.

Hello George,

that is quite odd - I cannot replicate that.
You’ve built a relationship like here:

?

When does the undefined show up, after you’ve saved the record and now you’re editing it?

Can you show screenshots of the studio fields / relationships?

You’ve done this via Studio, right?
And do you have other code customizations or plugins on your instance?

Hello the undefined shows up when i choose a record in the linked module,

and it also says there is not match for the link field that is created.