I'm getting a specific error when trying to load a csv file that has thousands of records which include issue id and parent id. The same format is working fine for smaller files. The error I'm getting is:
"You have selected too many fields for manual mapping! Please uncheck fields which have more than few thousand unique values."
I have not been able to find any information on what the size limit / row limit for importable CSVs are. Can someone let me know so that I can tailor the file accordingly?
There are no strict limits to the size of CSV file itself, we allow user to upload as big file as attachment settings allow it to be. If you have enough memory assigned to your JIRA, importer should be able to import even 1GB files.
Your error message is connected to "Map field value" checkbox.
When you are mapping CSV field to JIRA field, you do not need to check "Map field value" checkbox. You need to check it only if you'd like to manually map values from your CSV file to JIRA values. This is really useful for fields such as Issue Types, Resolutions, Priorities etc, it doesn't make much sense for non-unique fields.
JIRA won't allow you to go to the next step, if you have selected fields that have more than few thousand unique values, because it would result that next page would contain a table with few thousand textboxes.
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