Vertex Reasoning - code 03 and code 13 error

Multiple Reasoning Engine deployments are consistently failing with error codes 3 and 13. The deployments complete the creation phase but fail during the startup/serving phase.

Error Details
Error Pattern 1: Code 13 - Internal Error
{
"done": true,
"error": {
"code": 13,
"message": "Please refer to our documentation for checking logs and other troubleshooting tips."
}
}
Error Pattern 2: Code 3 - Failed to Start
{
"done": true,
"error": {
"code": 3,
"message": "Reasoning Engine resource failed to start and cannot serve traffic. Please refer to our documentation for checking logs and other troubleshooting tips."
}
}

Though i have currectly checked the location/region and permission role issues. - Everything is fine