https://community.appian.com/discussions/f/data/8262/dot-operator-not-working-for-nested-cdt-in-record-grid-view-configurationHi, Have a service based record for which CDT has two level nesting. While configuring Grid View in 16.2, it gives the following Error : The Requested Record Type Is Not Available Expression evaluation error : A grid layout column [label=“Vendor”] hasen-USTelligent Community 12https://community.appian.com/thread/36210?ContentTypeID=1Tue, 23 Aug 2016 17:41:05 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:ef34fae0-4a15-4094-88b5-abfec29dc4e4reginaldm377No problem and thanks for the comments as well @rishub &amp; @vikrantb. It&#39;s nice to know about these situations through others experience.<div style="clear:both;"></div>https://community.appian.com/thread/36209?ContentTypeID=1Tue, 23 Aug 2016 17:37:52 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:bd974e70-d4f4-415d-8c00-fbe8f41b7c6cvikrantbThanks all for your replies. It gives error only when field referenced using DOT operator is not coming from Webservice. Hence, index() function is a better choice.<div style="clear:both;"></div>https://community.appian.com/thread/36175?ContentTypeID=1Mon, 22 Aug 2016 19:19:23 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:1d9d09de-83db-453a-aac4-cdd5d5217d64rishubThis error comes when the CDT is empty. When CDT is empty, it does not get the field names so DOT does fail in that. Using index to fetch values from fields of CDT is the best way to handle these errors.<div style="clear:both;"></div>https://community.appian.com/thread/36174?ContentTypeID=1Mon, 22 Aug 2016 18:16:04 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:416d9fcc-9f26-406a-a69b-9a72d4a13fd3reginaldm377Could you show the portion of the query that is suppose to retrieve data for this column?<div style="clear:both;"></div>