Can you explain GRR and how I solve this problem?

thank you!

Your team completed GRR study with the following results: What is the most appropriate action for the current measurement system? The reproducibility variation is above the specified 30% cut-off. This is an unacceptable measurement system and the team should improve the current measurement system before using it to improve the process. Gauge R\&R makes up 45% of Total Variation which is greater than the specified 30% cut-off. This is an unacceptable measurement system and the team should improve the current measurement system before using it to improve the process. The repeatability variation is less than the specified cutoff for an acceptable measurement system of 30%, so the team should proceed to collect data with the current measurement system. The \% Part Variation of Total Variation is above the specified 30% cut-off. This is an unacceptable measurement system and the team should improve the current measurement system before using it to improve the process