Error Code 97779
In feeds submitted to Amazon, Amazon allows you to submit generic keywords up to 250 characters. When you submit a feed with more characters, this error will occur and your listing will not be published.
To fix this error, you should go to the template of the relevant product and set a character limit in the generic keyword field. To do that:
1- Click the 3 dot button under the Action tab of the product with the error and select “Edit template”.
2- Find generic keywords field and click “Edit” button.
3- In the pop-up window, go "Advanced" tab, find the limit box and fill in 250. Afterward, click the "OK" button.
4- Remember to “Save&Close” your template
5- Send force product data update and click the sync button from the top left corner.