# CostRollUp - Cost Workbench

**Category:** [Epicor ERP 9](https://www.epiusers.help/c/e9/7)
**Created:** 2017-01-05 15:13 UTC
**Views:** 789
**Replies:** 2
**URL:** https://www.epiusers.help/t/costrollup-cost-workbench/36792

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## Post #1 by @Jonathan_Lang

I have a mismatch error on a CostRollUp, which I've never seen. Here's the error:

<img src="/uploads/default/original/1X/a52e3148ccf9b4e8ae16199e3241d52ff497df54.jpg" width="393" height="178">

Has anyone seen this and what did you do to fix it? We've deleted the group and reloaded it. I'm not sure what else to try with this.

Thanks for the help,

Jonathan Lang

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## Post #2 by @Jim_Lutz

It looks like the type of error you would get if a server/client combination patch was applied to the server, but not this client.

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## Post #3 by @Jonathan_Lang

Thank you Jim. It's the Client. 

Jonathan

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**Canonical:** https://www.epiusers.help/t/costrollup-cost-workbench/36792
**Original content:** https://www.epiusers.help/t/costrollup-cost-workbench/36792