# FDA validator rule ID SD1148

**URL:** <https://forum.certara.com/t/fda-validator-rule-id-sd1148/1468>\
**Category:** SDTM\
**Created:** [January 6, 2020, 8:01am UTC](https://forum.certara.com/t/fda-validator-rule-id-sd1148/1468 "2020-01-06T08:01:08Z")\
**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:** [January 6, 2020, 4:38pm UTC](https://forum.certara.com/t/fda-validator-rule-id-sd1148/1468/1 "2020-01-06T16:38:17Z")

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Hi [Jintao](https://www.pinnacle21.com/users/jintaoshiboehringer-ingelheimcom),

What version of validator and SDTM configuration do you refer?

Thank you,

Sergiy

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**Author:** ![jintao.shi](https://avatars.discourse-cdn.com/v4/letter/j/76d3ee/32.png) [@jintao.shi](https://forum.certara.com/u/jintao.shi)\
**Post date:** [January 7, 2020, 8:01am UTC](https://forum.certara.com/t/fda-validator-rule-id-sd1148/1468/2 "2020-01-07T08:01:18Z")

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Hi Sergiy,

The latest version we can find via COMMUNITY-\>VALIDATION RULES at this P21 website. The FDA Rules is also refer to the latest version. T

Thank you and best wishes,

Jintao

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**Author:** ![jintao.shi](https://avatars.discourse-cdn.com/v4/letter/j/76d3ee/32.png) [@jintao.shi](https://forum.certara.com/u/jintao.shi)\
**Post date:** [January 6, 2020, 8:01am UTC](https://forum.certara.com/t/fda-validator-rule-id-sd1148/1468/3 "2020-01-06T08:01:08Z")

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Below FDA validator rule is not implemented in the P21 tool. May I know the consideration behind?

FDA validator rule ID SD1148 - Start Date/Time of Treatment (EXSTDTC) variable value must be greater than or equal to Date/Time of Experimental Start Date (EXPSTDTC) in Trial Summary (TS) domain.