# SD1201 Issue

**URL:** <https://forum.certara.com/t/sd1201-issue/461>\
**Category:** SDTM\
**Created:** [June 17, 2013, 5:11pm UTC](https://forum.certara.com/t/sd1201-issue/461 "2013-06-17T17:11:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Sergiy](https://sea1.discourse-cdn.com/certara/user_avatar/forum.certara.com/sergiy/32/2553_2.png) [@Sergiy](https://forum.certara.com/u/Sergiy)\
**Post date:** [June 18, 2013, 4:08pm UTC](https://forum.certara.com/t/sd1201-issue/461/1 "2013-06-18T16:08:07Z")

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Hi David,

I am not sure why are you receiving those false-positive messages. I validated a dataset you sent using a version of the validator available on our website.

My validation report includes 10 duplicated records in AE data. All of them look like real duplicates. E.g., records # 105 and 106. See all details in the excel file I emailed you this morning.

Please ensure that you use the same data as you sent to me, because your validation report shows 2 times more records in AE dataset, than it really has.

Regards,

Sergiy

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**Author:** ![David\_Borbas](https://avatars.discourse-cdn.com/v4/letter/d/7ba0ec/32.png) [@David\_Borbas](https://forum.certara.com/u/David_Borbas)\
**Post date:** [June 18, 2013, 5:12pm UTC](https://forum.certara.com/t/sd1201-issue/461/2 "2013-06-18T17:12:47Z")

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Hello Sergiy,

I re-ran validation as indicated previously and these messages seem clear now. Not sure why I had that glitch earlier. I will get back to you asap

David

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**Author:** ![David\_Borbas](https://avatars.discourse-cdn.com/v4/letter/d/7ba0ec/32.png) [@David\_Borbas](https://forum.certara.com/u/David_Borbas)\
**Post date:** [June 17, 2013, 5:11pm UTC](https://forum.certara.com/t/sd1201-issue/461/3 "2013-06-17T17:11:12Z")

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I get this error for duplicate subject, AEDECOD and start date

| AEDECOD, AESTDTC, USUBJID | Febrile neutropenia, 2011-11-17, EMTP-009046 | [SD1201](http://www.opencdisc.org/#'Rules'!A284) | Duplicate USUBJID/AEDECOD/AESTDTC record |
| --- | --- | --- | --- |
| AEDECOD, AESTDTC, USUBJID | Hypersensitivity, 2006-08-24, EMTP-009047 | [SD1201](http://www.opencdisc.org/#'Rules'!A284) | Duplicate USUBJID/AEDECOD/AESTDTC record |

When I look at the data I only see 1 record for each subject.

I send a copy of the data previously