# Data Viewer List only displayed completely after refresh **URL:** \ **Category:** Questions about Thunkable X\ **Created:** [February 26, 2021, 2:20pm UTC](https://community.thunkable.com/t/data-viewer-list-only-displayed-completely-after-refresh/1127192 "2021-02-26T14:20:14Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![migo](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/migo/32/83683_2.png) [@migo](https://community.thunkable.com/u/migo)\ **Post date:** [February 26, 2021, 2:20pm UTC](https://community.thunkable.com/t/data-viewer-list-only-displayed-completely-after-refresh/1127192/1 "2021-02-26T14:20:14Z")
Have you ever experienced this issue: I use a Data Viewer List whose source data is a local table. As soon as the local table is filled, I display the DVL on the screen. It happens quite often (not always), that not all records are displayed in the DVL. When I perform a “refresh data” on the DVL at this point, all records (incl. the formerly missing ones) are displayed correctly. Additional information: While building the local tables, I count the records that are written into the tables. The number of records is correct before I start the display in the DVL. This only happens on smartphones (thunkable live as well as downloaded and released apps). When I run the app in web (via live test or published WebApp), the error does not occur. ---
**Author:** ![drted](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/drted/32/92694_2.png) [@drted](https://community.thunkable.com/u/drted)\ **Post date:** [February 27, 2021, 11:38am UTC](https://community.thunkable.com/t/data-viewer-list-only-displayed-completely-after-refresh/1127192/2 "2021-02-27T11:38:30Z")
It is difficult to make suggestions without seeing the blocks you are using. I have encountered erratic results as you describe (rare on web, more frequent on devices) when using asynchronous blocks. Check out this thread where I describe the problem and a solution [Wrapping Asynchronous (then do) blocks into a Synchronous Function resolves unpredictable results](https://community.thunkable.com/t/wrapping-asynchronous-then-do-blocks-into-a-synchronous-function-resolves-unpredictable-results/910511) ---
**Author:** ![migo](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/migo/32/83683_2.png) [@migo](https://community.thunkable.com/u/migo)\ **Post date:** [February 27, 2021, 1:29pm UTC](https://community.thunkable.com/t/data-viewer-list-only-displayed-completely-after-refresh/1127192/3 "2021-02-27T13:29:05Z")
Thank you @drted, you are undoubtedly right. And your guess about “asynchronous” is probably correct as well. I already tried to reproduce the problem in a simple sandbox to be able to show it here, but I don’t get to reproduce the error. The real app is quite complex and hardly suitable to post any of it here. I’m helping myself meanwhile “wait for predecessor”-loops to re-serialize the asynchronous steps a bit. Works quite well so far. Thanks for your feedback and opinion! ---
**Author:** ![ozel1978](https://avatars.discourse-cdn.com/v4/letter/o/3ec8ea/32.png) [@ozel1978](https://community.thunkable.com/u/ozel1978)\ **Post date:** [April 30, 2021, 4:03am UTC](https://community.thunkable.com/t/data-viewer-list-only-displayed-completely-after-refresh/1127192/4 "2021-04-30T04:03:32Z")
@drted any idea how to refresh data in data source? i am using airtable as a data. ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [November 8, 2024, 1:29pm UTC](https://community.thunkable.com/t/data-viewer-list-only-displayed-completely-after-refresh/1127192/5 "2024-11-08T13:29:10Z")