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Error on qualifying a Lead - Cannot read property 'setValue' of null

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Posted on by Harbour

On qualifying a lead to a case, information is copied to the Contact and the Case. But every time I qualify, I get this error: Cannot read property 'setValue' of null. It's strange as the case is created and the updates are there, however, I suspect that one of the fields is not actually being set or updated. How can I find out what field this is? The error log is as follows:

Thank you!

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a33ik 84,331 Most Valuable Professional on at

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Hello,

According to the error description, you have an issue with your code. You will have to troubleshoot it. Check my video on how you can do it:

www.youtube.com/watch

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Esteban Coto Alfaro on at

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Hello, I recommend to add a debugger inside the function so you can figure out which field is throwing the error.

Thanks!

Community Support Team - Esteban

If this Post helps, then please consider Accept as solution to help the other members find it more quickly.

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necsa 3,455 on at

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Hi,

I think the field is not on the Form.

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Amit Katariya007 10,409 Super User 2025 Season 2 on at

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Hi,

Below is the possible reasons :-

1. The Field which you are referring on the Lead form is not present on the lead form itself. That means in source it self will have value as null and when you trying to set that value on designated fields then you will get the Null error.

2. The field which you are trying to set on the form is not present on the form.

3. It is possible that you have provided wrong "Schema name" of that field which you are trying to Get or Set.

stackoverflow.com/.../weird-error-typeerror-cannot-read-property-setvalue-of-null-at-onsuccessmapun

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Harbour 5 on at

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Thank you for your explanations and yes that makes total sense. I am however trying to figure out what field it is on the destination that is missing on the lead form... how can I check this?

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Amit Katariya007 10,409 Super User 2025 Season 2 on at

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Yup you can easily check by debugging your code.

Please refer below link where you will find the steps to debug JavaScript code.

carldesouza.com/.../

Also one suggestion please always check if your source field is null or not. if it is not null then set the value to destination field.

carldesouza.com/.../

Please verify this answer if you will able to resolve this issue.

Thank you,

Amit Katariya

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Timothy Bohte 44 on at

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Hi,

When qualifying a lead, the system will try to create three records, an opportunity, account and contact. Check if there are any mandatory collums in those tables that are not present or mandatory on the lead form.

Regards,

Timothy

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