# The required feature 'target' / source must bet set **URL:** \ **Category:** Q&A\ **Created:** [13 April 2014 20:26 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375 "2014-04-13T20:26:53Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![jcvegan](https://avatars.discourse-cdn.com/v4/letter/j/c0e974/32.png) [@jcvegan](https://community.ofelia.com/u/jcvegan)\ **Post date:** [13 April 2014 20:26 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/1 "2014-04-13T20:26:53Z")
I am having some trobules when I deleted a Pool, the pool have one flow that receive a message… When I deleted this pool. The message flow disappears. But now when I try to execute the diagram, got this error: The required feauture ‘source’ of ‘MyDiagram:message flow’ must be set. The required feauture 'target of ‘MyDiagram:message flow’ must be set. When I double click this error, It selects all the diagram. So I am not able to delete this message. Is it possible to remove this flow? ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/community_bonitasoft/original/2X/6/6b7b18c0478f2645369e82e009b65e3b97f2cc12.svg) [@system](https://community.ofelia.com/u/system)\ **Post date:** [30 April 2014 08:16 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/2 "2014-04-30T08:16:30Z")
From the error message, it looks like the message flow is still in your process definition. If you can’t see it in the main diagram, you could check in the Tree view (bottom-left of the Studio screen). You could also check the validation status for you diagram, and see if it indicates any errors related to this. ---
**Author:** ![jrlexx](https://avatars.discourse-cdn.com/v4/letter/j/f07891/32.png) [@jrlexx](https://community.ofelia.com/u/jrlexx)\ **Post date:** [22 March 2017 02:35 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/3 "2017-03-22T02:35:44Z")
Thank z\_piotr that is the answer In the folder of bonita , /BonitaBPMCommunity-7.4.2/workspace/default/diagrams find the diagram with extension .proc open with notepad, bloc notes or nano, and find the flow , remove the line and save. Submitted by z\_piotr on Thu, 06/26/2014 - 10:36 Hello! I solved a very similar problem by editing in notepad++ the \*\* .proc \*\*file, I deleted the following lines: regards Per ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/community_bonitasoft/original/2X/6/6b7b18c0478f2645369e82e009b65e3b97f2cc12.svg) [@system](https://community.ofelia.com/u/system)\ **Post date:** [14 April 2014 10:19 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/4 "2014-04-14T10:19:50Z")
did you remove the step that send the message received by your deleted pool ? ---
**Author:** ![jcvegan](https://avatars.discourse-cdn.com/v4/letter/j/c0e974/32.png) [@jcvegan](https://community.ofelia.com/u/jcvegan)\ **Post date:** [14 April 2014 14:21 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/5 "2014-04-14T14:21:46Z")
Yes, I’ve already done that ---
**Author:** ![z\_piotr](https://avatars.discourse-cdn.com/v4/letter/z/258eb7/32.png) [@z\_piotr](https://community.ofelia.com/u/z_piotr)\ **Post date:** [26 June 2014 08:36 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/6 "2014-06-26T08:36:20Z")
Hello! I solved a very similar problem by editing in notepad++ the \*\* .proc \*\*file, I deleted the following lines: regards ---
**Author:** ![amartinez\_106](https://avatars.discourse-cdn.com/v4/letter/a/779978/32.png) [@amartinez\_106](https://community.ofelia.com/u/amartinez_106)\ **Post date:** [7 May 2014 13:20 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/7 "2014-05-07T13:20:48Z")
Right…but once found, how do you delete them? ---
**Author:** ![z\_piotr](https://avatars.discourse-cdn.com/v4/letter/z/258eb7/32.png) [@z\_piotr](https://community.ofelia.com/u/z_piotr)\ **Post date:** [24 June 2014 09:40 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/8 "2014-06-24T09:40:07Z")
Hi amartinez\_106, Did you resolved this problem? regards ---
**Author:** ![david.peregrim](https://avatars.discourse-cdn.com/v4/letter/d/848f3c/32.png) [@david.peregrim](https://community.ofelia.com/u/david.peregrim)\ **Post date:** [4 September 2014 15:42 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/9 "2014-09-04T15:42:59Z")
I have this same problem. There is a message showing up as a validation error, but it no longer exists in the diagram ---
**Author:** ![kellyncrhis](https://avatars.discourse-cdn.com/v4/letter/k/838e76/32.png) [@kellyncrhis](https://community.ofelia.com/u/kellyncrhis)\ **Post date:** [6 February 2015 03:32 UTC](https://community.ofelia.com/t/the-required-feature-target-source-must-bet-set/4375/10 "2015-02-06T03:32:54Z")
Hello, I have this same problem too. I deleted some pools of the diagram and now there are some errors: The required feature 'source´ of ‘Mapeamento do processo:Filled CS Questionnarie’ must be set The required feature 'target´ of ‘Mapeamento do processo:Filled CS Questionnarie’ must be set The required feature 'source´ of ‘Mapeamento do processo:Filled RFQ (Qual) Form’ must be set The required feature 'target´ of ‘Mapeamento do processo:Filled RFQ (Qual) Form’ must be set How can be solved this issue?