BRFPlus Rules not working in SAP MDG 7.0 sp2

Hi Experts,

I am working on SAP MDG 7.0 Service Pack 2, and am facing issue in validations created in BRFPlus.

I have created Check Function Validations in BRFPlus, to be applied on the Change Request Screen of customer / supplier of SAP MDG.

The validations are active in BRFPlus but do not appear on clicking the check button 😭

Please let me know if anybody has created validations in BRFPlus and if they are working on Change Request UI of SAP MDG 7.0 sp2 ??