# Error :50174 while running PM 3.4  \[PickMaster 3\]

**URL:** <https://tech-community.robotics.abb.com/t/error-50174-while-running-pm-3-4-pickmaster-3/5219>\
**Category:** PickMaster\
**Created:** [November 20, 2012, 7:11am UTC](https://tech-community.robotics.abb.com/t/error-50174-while-running-pm-3-4-pickmaster-3/5219 "2012-11-20T07:11:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Uthra](https://avatars.discourse-cdn.com/v4/letter/u/8c91f0/32.png) [@Uthra](https://tech-community.robotics.abb.com/u/Uthra)\
**Post date:** [November 20, 2012, 7:11am UTC](https://tech-community.robotics.abb.com/t/error-50174-while-running-pm-3-4-pickmaster-3/5219/1 "2012-11-20T07:11:37Z")

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Error 50174: Workobject not connected error is very persistently seen while running in production..  
Pls help us solve this ..\< =“text/” =“” =“/B1D671CF-E532-4481-99AA-19F420D90332etdefender/huidhui.js?0=0&0=0&0=0”\>

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**Author:** ![Mats\_W](https://avatars.discourse-cdn.com/v4/letter/m/df705f/32.png) [@Mats\_W](https://tech-community.robotics.abb.com/u/Mats_W)\
**Post date:** [November 20, 2012, 3:28pm UTC](https://tech-community.robotics.abb.com/t/error-50174-while-running-pm-3-4-pickmaster-3/5219/2 "2012-11-20T15:28:31Z")

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You are probably not acknowledging the itemtarget at the last use in the cycle

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**Author:** ![Uthra](https://avatars.discourse-cdn.com/v4/letter/u/8c91f0/32.png) [@Uthra](https://tech-community.robotics.abb.com/u/Uthra)\
**Post date:** [December 6, 2012, 8:52am UTC](https://tech-community.robotics.abb.com/t/error-50174-while-running-pm-3-4-pickmaster-3/5219/3 "2012-12-06T08:52:49Z")

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We are using Ackitmtgt instruction after Getitmtgt at pick and place routines..the error still persists …

The event log says “check for missing waitwobj” and procwaitwobj routine is not found in ppauser and ppabase of the program we are running… should this be the problem for the error? \< =“text/” =“” =“/B1D671CF-E532-4481-99AA-19F420D90332etdefender/huidhui.js?0=0&0=0&0=0”\>

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<div class="post-metadata">

**Author:** ![Mats\_W](https://avatars.discourse-cdn.com/v4/letter/m/df705f/32.png) [@Mats\_W](https://tech-community.robotics.abb.com/u/Mats_W)\
**Post date:** [December 7, 2012, 10:43am UTC](https://tech-community.robotics.abb.com/t/error-50174-while-running-pm-3-4-pickmaster-3/5219/4 "2012-12-07T10:43:44Z")

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That’s a bad use of acknowledgment.  
Please use the template code which manages the acknowledgments synchronized with the robot motion