Cannot create child table records

ERPNext
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1

I have a doctype called Planning form and a child doctype Planning form line where it is linked as table to parent(planning form). While creating a table records and saving it shows planning_form_line_seq_id does not exist.

I cannot create a record because of this. Kindly help

Thanks in advance

2

can you provide screenshot of your parent and child table?

3

It looks like you’ve missed out on some custom field called “planning_form_line_seq_id”.
Please check the Child DocType and confirm if the field names are correct and also if you’ve deleted /renamed any previous fields bearing that field name.