parsererror Status: 'OK'. Error code: 200

I was getting this error when my sql-db did not reflect what was being input.

I was getting it alot when my column was varchar (3) and I input a string of 4 or more. you may need to extend the number of allowed characters or adjust the data type.

some other threads for jqgrid suggest it is a json issue but you may try this first. I was able to resolve my issue without touching json

just check your db and be sure you are filling in the collumns correctly