List of All Vendors-Item Relations is used in generating PO. Each items should have a Vendors relation and suggested PO Price.
File Preparation
If only a few items has to be updated in the file, the best way to do it is:
1. Go to Zoho Creator -> Master Data -> All Vendor-Item Relations
2. Click 3 dots on the top right side -> Export
3. Check mark Unit Cost / Item No / Vendor and click Export.
4. In the exported file add new vendor-item relations or update existing. Save file
Import the file
To update the list with a new file:
1. Go to Zoho Creator -> Master Data -> All Vendor-Item Relations
2. Click 3 dots on the top right side -> Import
3. The file mapping will be displayed in next screen. Confirm fields in the file correspond to field names in the Report.
4. Next close the Columns Mapping and click Settings
5. Be sure such options are selected:
Import Mode -> Append Rows
On import error -> Do not import records
Execute scripts is on ( this is important as it checks the file on errors)
6. Next, close the Settings and click Import
7. If there is an error in the file an error list will be shown. In this case check the error and fix the file. You can have the wrong Item No, or Vendor.
8. When there is no errors, the file will be imported and records will be refreshed

When the file is imported, all previous records are deleted, so be sure to export the current file as a backup and include all Vendor-Item Relations in the new file