# System data row convert error

**URL:** <https://forum.uipath.com/t/system-data-row-convert-error/165952>\
**Category:** Help\
**Tags:** datatable, error, system, activities\
**Created:** [November 7, 2019, 8:57am UTC](https://forum.uipath.com/t/system-data-row-convert-error/165952 "2019-11-07T08:57:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![hasib08](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/hasib08/32/73642_2.png) [@hasib08](https://forum.uipath.com/u/hasib08)\
**Post date:** [November 7, 2019, 8:57am UTC](https://forum.uipath.com/t/system-data-row-convert-error/165952/1 "2019-11-07T08:57:37Z")

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![image](https://global.discourse-cdn.com/uipath/original/3X/0/8/082749313e05180ca07d1acd5cb78eab385adba2.png)

@Palaniyappan

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**Author:** ![Rocki\_Jan](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/rocki_jan/32/60784_2.png) [@Rocki\_Jan](https://forum.uipath.com/u/Rocki_Jan)\
**Post date:** [November 7, 2019, 9:03am UTC](https://forum.uipath.com/t/system-data-row-convert-error/165952/2 "2019-11-07T09:03:49Z")

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FOR EACH ROW activity accepts only DATATABEL as input. I see you are passing ARRAY OF DATAROW.  
To iterate through ARRAY OF DATAROW, you can use FOR EACH activity and change TARGET TYPE as DATAROW

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<div class="post-metadata">

**Author:** ![hasib08](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/hasib08/32/73642_2.png) [@hasib08](https://forum.uipath.com/u/hasib08)\
**Post date:** [November 7, 2019, 9:06am UTC](https://forum.uipath.com/t/system-data-row-convert-error/165952/3 "2019-11-07T09:06:08Z")

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walk through given in academy

 ![image](https://global.discourse-cdn.com/uipath/original/3X/e/8/e83783dcdb1d2654fabbfae19eb917e78b8d32b3.png)

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<div class="post-metadata">

**Author:** ![Rocki\_Jan](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/rocki_jan/32/60784_2.png) [@Rocki\_Jan](https://forum.uipath.com/u/Rocki_Jan)\
**Post date:** [November 7, 2019, 9:09am UTC](https://forum.uipath.com/t/system-data-row-convert-error/165952/4 "2019-11-07T09:09:07Z")

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In the above example clubMembers should be a DataTable not Array of DATAROW.

one thing you can do is in you example, use

`members.CopyAsDatatable`

in your for each row activity which will convert Array or DataRow to Datatable

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**Author:** ![system](https://sea2.discourse-cdn.com/uipath/user_avatar/forum.uipath.com/system/32/182466_2.png) [@system](https://forum.uipath.com/u/system)\
**Post date:** [November 10, 2019, 9:09am UTC](https://forum.uipath.com/t/system-data-row-convert-error/165952/5 "2019-11-10T09:09:08Z")

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Closed on November 10, 2019, 9:09am UTC

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