# Same key error during cost rollup in costing workbench

**URL:** <https://www.epiusers.help/t/same-key-error-during-cost-rollup-in-costing-workbench/71578>\
**Category:** Epicor ERP 10\
**Tags:** e10\
**Created:** [October 6, 2020, 7:11pm UTC](https://www.epiusers.help/t/same-key-error-during-cost-rollup-in-costing-workbench/71578 "2020-10-06T19:11:35Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![EricZ](https://www.epiusers.help/letter_avatar_proxy/v4/letter/e/e274bd/32.png) [@EricZ](https://www.epiusers.help/u/EricZ)\
**Post date:** [October 6, 2020, 7:11pm UTC](https://www.epiusers.help/t/same-key-error-during-cost-rollup-in-costing-workbench/71578/1 "2020-10-06T19:11:35Z")

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I am getting a same key error on the cost rollup program in the costing workbench. How do I find the part that has the same key?

 ![image](https://www.epiusers.help/uploads/default/original/3X/5/a/5a85684e378000b99d9e75ae861ff8fb87cd807e.png)