Error while uploading data into Child Table

Frappe Framework Customization
1

Hi,
I have a custom table in Lead Doctype.

I am trying to upload data into child table via Data Import Tool and I am getting the below error for the same.

I appreciate if anyone can throw some light on the same.

Pasted image1238×564 52.8 KB

Regards
Ruchin Sharma

2

None of the data is getting imported or just few rows? Can you compare the data in two rows if something is different.

3

@KanchanChauhan
None of the data is being imported even the strange part is, I have exported the lead data which is already exists in the system with the help of Data Import Tool and then after changing its values when I try to import the same. It is giving me the same error.

Actually, I have added around 200 more custom fields in the Lead and not using any of the standard field.

Regards
Ruchin Sharma