# Studyside.message error when using ds.merge

**URL:** <https://datashield.discourse.group/t/studyside-message-error-when-using-ds-merge/665>\
**Category:** Analyst Support\
**Created:** [2 December 2022 10:20 UTC](https://datashield.discourse.group/t/studyside-message-error-when-using-ds-merge/665 "2022-12-02T10:20:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![SophieBlaauwendraad](https://avatars.discourse-cdn.com/v4/letter/s/8edcca/32.png) [@SophieBlaauwendraad](https://datashield.discourse.group/u/SophieBlaauwendraad)\
**Post date:** [2 December 2022 10:20 UTC](https://datashield.discourse.group/t/studyside-message-error-when-using-ds-merge/665/1 "2022-12-02T10:20:08Z")

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Hi all. When I’m trying to merge the outcome tables from the same dataset to the core data (after seperately changing them in wide format), I get the error "$validity.check [1] " invalid in at least one source. See studyside.messages: $studyside.messages$genr [1] “NOT ALL OK: there are studysideMessage(s) on this datasource”

My code is as follows: ds.merge( x.name = “core\_wide”, y.name = “outcome\_monthlyrep\_wide”, by.x.names = “child\_id”, by.y.names = “child\_id”, suffixes = c(“.core”, “.outcome”), no.dups = TRUE, newobj = “merge1”, datasources = connections )

Does anyone know how to solve this issue? Many thanks!

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**Author:** ![demetris.avraam](https://avatars.discourse-cdn.com/v4/letter/d/439d5e/32.png) [@demetris.avraam](https://datashield.discourse.group/u/demetris.avraam)\
**Post date:** [2 December 2022 13:59 UTC](https://datashield.discourse.group/t/studyside-message-error-when-using-ds-merge/665/2 "2022-12-02T13:59:26Z")

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Hi Sophie,

The ds.merge function and few more functions have a disclosure control that blocks any name of object that has more than 20 characters. So, I think if you change the name of “outcome\_monthlyrep\_wide” to a name with less characters, the function will work without any error messages. Can you please check and let me know if that solves this issue?

Many thanks, Demetris

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**Author:** ![SophieBlaauwendraad](https://avatars.discourse-cdn.com/v4/letter/s/8edcca/32.png) [@SophieBlaauwendraad](https://datashield.discourse.group/u/SophieBlaauwendraad)\
**Post date:** [3 December 2022 07:34 UTC](https://datashield.discourse.group/t/studyside-message-error-when-using-ds-merge/665/3 "2022-12-03T07:34:01Z")

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Hi Demetris,

Thank you, this indeed solved my problem!

Best, Sophie