Gage R&R

Answer:
Gage R&R stands for Gage Repeatability and reproducibility and it is mandatory when you perform Measurement System Analysis (MSA).
When Gage R&R study fails that means you don’t have the process under control as per Control plan. So, MSA is not valid if Gage R&R fails. It means people who are doing measurement had a lot of variation and process is not stable.
So, based on your case it is non-conformance for clause 7.1.5.1.1 Measurement System Analysis.
A supplier needs to show that Gage R&R has pass ed. There is no opportunity for reusing of any old Gage R&R study because it refers only to measurement done at the specific time.
Please see further explanation at How to establish Measurement System Analysis (MSA) - https://advisera.com/16949academy/blog/2017/11/08/how-to-establish-measurement-system-analysis-according-to-iatf-16949/

Also, you may use our Procedure for Control of Gauges - https://advisera.com/16949academy/documentation/procedure-for-control-of-gauges/