# OpenCDISC 1.5 SD0056 error for MLPSTRGU variable **URL:** \ **Category:** SDTM\ **Created:** [April 24, 2014, 9:08pm UTC](https://forum.certara.com/t/opencdisc-1-5-sd0056-error-for-mlpstrgu-variable/598 "2014-04-24T21:08:41Z")\ **Posts on this page:** 2\ **Page:** 1
**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:** [May 1, 2014, 7:39pm UTC](https://forum.certara.com/t/opencdisc-1-5-sd0056-error-for-mlpstrgu-variable/598/1 "2014-05-01T19:39:57Z")
Hi Bessie, Thank you for reporting this issue! –PSTRGU is “Pharmaceutical Strength Units” variable recently introduced in SDTM v1.4. Yes, this variable should not be Required for custom Intervention domains. It’s a bug in OpenCDISC specifications for SDTM IG 3.2. As a temporary solution you can ignore this false-positive messages or change OC Validator specifications manually by editing a “config-sdtm-3.2.xml” file in “…\opencdisc-validator\config” folder. Find and replace the following text (row #522) by Sorry for inconvenience. Kind Regards, Sergiy ---
**Author:** ![biess\_330](https://avatars.discourse-cdn.com/v4/letter/b/ecae2f/32.png) [@biess\_330](https://forum.certara.com/u/biess_330)\ **Post date:** [April 24, 2014, 9:08pm UTC](https://forum.certara.com/t/opencdisc-1-5-sd0056-error-for-mlpstrgu-variable/598/2 "2014-04-24T21:08:41Z")
Dear All, I was testing OpenCDISC1.5 today and there is a error message for SD0056 (SDTM required variable not found) that looks strange. It shows variable MLPSTRGU that is not found on the Meal dataset. However, I didn’t find any information about this variable0 MLPSTRG on SDTMIG or online. Please advice. DOAMIN VALUE RULE ID MESSAGE CATEGORY SEVERITY ML MLPSTRGU [SD0056](http://www.opencdisc.org/#'Rules'!A330) SDTM Required variable not found Metadata Error Thank you! Bessie