# Reusable Process Block for Sub flow

**URL:** <https://forum.flowable.org/t/reusable-process-block-for-sub-flow/5492>\
**Category:** Flowable Engine\
**Created:** [February 21, 2020, 5:59am UTC](https://forum.flowable.org/t/reusable-process-block-for-sub-flow/5492 "2020-02-21T05:59:41Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sameer.uppal](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@sameer.uppal](https://forum.flowable.org/u/sameer.uppal)\
**Post date:** [February 21, 2020, 5:59am UTC](https://forum.flowable.org/t/reusable-process-block-for-sub-flow/5492/1 "2020-02-21T05:59:42Z")

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1. We want to define subflow once and tried to reuse this flow in multiple places/times.
2. We have tried CallActivity to execute external sub process from the main process.|
3. But system is unable to call sub processes. We have found few topic related to this subject but not getting clear idea.

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**Author:** ![sameer.uppal](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@sameer.uppal](https://forum.flowable.org/u/sameer.uppal)\
**Post date:** [February 26, 2020, 4:09am UTC](https://forum.flowable.org/t/reusable-process-block-for-sub-flow/5492/2 "2020-02-26T04:09:45Z")

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hi Team  
waiting for input.  
regards  
sameer

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**Author:** ![wwitt](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.flowable.org/wwitt/32/706_2.png) [@wwitt](https://forum.flowable.org/u/wwitt)\
**Post date:** [February 26, 2020, 2:50pm UTC](https://forum.flowable.org/t/reusable-process-block-for-sub-flow/5492/3 "2020-02-26T14:50:42Z")

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Can you talk more about your set up? How are you deploying your processes? What kind of errors are you getting when the call activity is trying to execute?

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**Author:** ![sameer.uppal](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@sameer.uppal](https://forum.flowable.org/u/sameer.uppal)\
**Post date:** [March 16, 2020, 7:14am UTC](https://forum.flowable.org/t/reusable-process-block-for-sub-flow/5492/4 "2020-03-16T07:14:15Z")

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Yes please. Please let us know know when we can talk.  
My content Number- 9958199197

regard  
Sameer