https://community.appian.com/discussions/f/rules/9578/document-uploads-on-gridlayoutI have a gridLayout where I am uploading a document to each record. If the Docuemnt is already uploaded to the record it displays my grid, but if the document is not uploaded it gives an error as below: &quot;Could not display interface. Please check definitionen-USTelligent Community 12https://community.appian.com/thread/41978?ContentTypeID=1Fri, 13 Jan 2017 19:47:19 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:54ad7f32-c410-4aeb-9776-ab3c668c146esaileshdYes thats right. Its resolved now. Thanks everyone!<div style="clear:both;"></div>https://community.appian.com/thread/41970?ContentTypeID=1Fri, 13 Jan 2017 16:15:19 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:14461094-b160-49f5-ae6f-8246f7ee34beayishabanum1We need to do null check before passing the list . It may resolve the issue.<div style="clear:both;"></div>https://community.appian.com/thread/41969?ContentTypeID=1Fri, 13 Jan 2017 16:00:40 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:5a23aee2-d629-4699-b109-77bf991ca1e6chetanyBe aware with using isnull on arrays. (whether CDT or primitive array).<br />If the variable used for the array is actually null, then null will work as expected and return true.<br />But, if the array is just empty (but not null), isnull will return false.<br /><br />If not kept in mind, this error may cause unintended behavior.<div style="clear:both;"></div>https://community.appian.com/thread/41958?ContentTypeID=1Fri, 13 Jan 2017 08:05:17 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:a446cb1a-c5a4-4ab2-a5ef-dc19b7c13a7epriyankasabankaryes, the error indicates that, the index you are reffering to is not present, checking null before passing the list may resolve the issue!<div style="clear:both;"></div>https://community.appian.com/thread/41957?ContentTypeID=1Fri, 13 Jan 2017 07:32:27 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:d6d0fac1-907c-485e-a3c6-447487ec4e46Sally MasonBefore calling &quot;icams_editlogisticsgroupeditmoduleitemroweach&quot; check that the array is not null ( isnull() ) as the error mentions the &quot;valid range is empty.<br /><br />More information in these functions at <a href="https://forum.appian.com/suite/help/16.3/Array_Functions.html#length.28.29">forum.appian.com/.../Array_Functions.html</a><br /><a href="https://forum.appian.com/suite/help/16.2/Informational_Functions.html#isnull.28.29">forum.appian.com/.../Informational_Functions.html</a><br /><br /><br /><div style="clear:both;"></div>https://community.appian.com/thread/41954?ContentTypeID=1Fri, 13 Jan 2017 06:18:00 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:73b7568a-9a3e-4bd4-9e08-c02b1b81fdb8Karthik@sally, Do we have index 0? I think appian array indexes are starting from 1. Or probably I didn&#39;t understand your response well.<div style="clear:both;"></div>https://community.appian.com/thread/41953?ContentTypeID=1Fri, 13 Jan 2017 04:05:49 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:92a3363a-ead9-4380-9881-d19f4af9132asaileshdYes you are right Sally. Let me decode it... I guess I will be able to address it now :)<div style="clear:both;"></div>https://community.appian.com/thread/41952?ContentTypeID=1Fri, 13 Jan 2017 03:33:40 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:46d1a455-f2d6-47ac-994f-a41ee545f578Sally MasonThe error indicates you are trying to access an index that does not exist; so try using a lower index than &#39;1&#39;, use &#39;0&#39; instead. Let us know if that resolves your issue?<div style="clear:both;"></div>https://community.appian.com/thread/41948?ContentTypeID=1Fri, 13 Jan 2017 02:33:29 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:526f94f6-0b91-4ea5-8e9b-9d461a365a6dgaurava322I too have implemented Document upload component on grid layout, but never faced this issue.<br /><div style="clear:both;"></div>https://community.appian.com/thread/41947?ContentTypeID=1Fri, 13 Jan 2017 02:32:26 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:9f1e81a8-829d-463a-b573-19ead22d9d88gaurava322Can u please share the code that you have written.<div style="clear:both;"></div>