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Lookup field value Overwritten Original value

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Posted on by sandeepc

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unexpected error

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Dynamics 365 general

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Jeevarajan Kumar 769 Most Valuable Professional on at

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Lookup field value Overwritten Original value

Hi Sandeep,

Few things, by the looks of it, itseems that lookup field_2 is a polymorphic lookup field.
Step1: Make sure that it's multi entity polymorphic field since you cannot set a "concatenated" value into a single lookup polymorphic field.
Step 2: it seems there are few issues in the code. 1. dont do JSON parse, use the object directly. 2. Don't use Split, its not a string as its an object. 3. Key issue here is the concat, try something like this rather

// Merge and remove duplicates const merged = [...lookup field_2]; lookup field_3.forEach(item => { if (!merged.some(existing => existing.id === item.id && existing.entityType === (item.entityType || item.logicalName))) { merged.push({ id: item.id, name: item.name, entityType: item.entityType || item.logicalName }); } }); formContext.getAttribute("lookupfield_2").setValue(merged);

Please mark my answer as Yes if it helps!
sandeepc 5,388 on at

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Lookup field value Overwritten Original value

Sales @andre
André Arnaud de Cal... 294,261 Super User 2025 Season 1 on at

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Lookup field value Overwritten Original value

Hi Sandeep,

Can you tell us what Dynamics 365 application this question is related to? There are several different solutions in the Dynamics 365 family, like: Sales, Finance, Supply Chain Management, Project Operations, and Business Central.
sandeepc 5,388 on at

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Lookup field value Overwritten Original value

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