security-engineer video for you are configuring a new Cloud Storage bucket encrypted with a customer-managed encryption key (CMEK), stored in Cloud Key
You are configuring a new Cloud Storage bucket encrypted with a customer-managed encryption key (CMEK), stored in Cloud Key Management Service (KMS) under the project "prj-a," while the Cloud Storage bucket itself will be in "prj-b." The encryption key is backed by a Cloud Hardware Security Module (HSM) and located in the region europe-west3 . However, the Cloud Storage bucket will reside in the europe-west1 region. When creating the bucket, you encounter an issue accessing the key. What is the likely cause of this access issue?