Error: Please ensure that the attributes has less than 100 characters

Error: Please ensure that the attributes has less than 100 characters

Hi everybody,

I am trying to create the Item Group using the API https://www.zoho.com/inventory/api/v1/#Item_Groups_Create_an_Item_Group
and got this error:
  1. {"code":15,"message":"Please ensure that the attributes has less than 100 characters."}
Here is the JSON string:
  1. {"group_name":"Bayliss Rugs Bungalow Oyster Shell","unit":"M2","status":"active","attribute_id1":1,"attribute_name1":"Size","attributes":[{"id":1,"name":"Size","options":[{"id":101,"name":"160 x 230 cm"},{"id":101,"name":"200 x 300 cm"},{"id":101,"name":"250 x 350 cm"},{"id":101,"name":"300 x 400 cm"}]}]}

What did I do wrong?

Thank you in advance.