Not able to create stack in GovCloud

[sarahjohns388]

Hello Folk's, 

Not able to create stack in GovCloud.

Missing AWSRegionArch2AMI
Missing BucketRegionMap

Made change to template

"AWSRegionArch2AMI" : {
"us-gov-west-1" : {"PV64" : "ami-89e060e8", "HVM64" : "ami-89e060e8", "HVMG2" : "ami-89e060e8"},
and
"BucketRegionMap" : {
"us-gov-west-1" : { "Name": "panw-aws-us-gov-west-1" },

The S3 bucket arn change as:
arn:aws-us-gov:s3:::

"PanS3BucketTpl": {
"Value": { "Fn::Join": [ "", [ "arn:aws-us-gov:s3:::", { "Fn::If" : [ "PANWCode", { "Fn::Join": [ "-", [ "panw-aws", { "Ref": "AWS::Region" }]]}, { "Ref" : "PanS3BucketTpl" }] }] ] },
"Description": "Your Template/Lambda Code bucket being used for this deployment"
and "S3Endpoint2", "S3Endpoint3", "S3Endpoint4" reference to "arn:aws"

https://www.paloaltonetworks.com/documentation/71/virtualization/virtualization/set-up-the-vm-series... | AWS Certified

getting error: CREATE_FAILED | AWS::CloudFormation::Stack | az2 | TemplateURL must reference a valid S3 object to which you have access.

any suggestions?