diff --git a/CHANGELOG.md b/CHANGELOG.md
index ebdaf46..50d3052 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,3 +3,10 @@
 * 1.0.0 -- 2024-01-02
   - initial creation
 
+
+* 1.0.1 -- 2024-01-08
+  - add
+    - certificate_ip_addresses
+    - certificate_uris
+    - generate filename if certificate_dns missing and certificate_cn contains non FQDN characters
+    - update docs
diff --git a/acm/README.md b/acm/README.md
index 8b9dbd6..76f6d38 100644
--- a/acm/README.md
+++ b/acm/README.md
@@ -50,6 +50,8 @@ resource "aws_lb_listener" "app_443" {
 The output value to look at is `certificate_arn`.  This is null if the certificate is incomplete or failed to load into ACM, or
 the ARN if completed.   You'll use the ARN for an AWS LB Listener.
 
+# Links
+
 ## Requirements
 
 | Name | Version |
diff --git a/acm/main.tf b/acm/main.tf
index 12d9fb0..3626f13 100644
--- a/acm/main.tf
+++ b/acm/main.tf
@@ -49,6 +49,8 @@
 *
 * The output value to look at is `certificate_arn`.  This is null if the certificate is incomplete or failed to load into ACM, or
 * the ARN if completed.   You'll use the ARN for an AWS LB Listener.
+*
+* # Links
 */
 
 
diff --git a/acmpca/README.md b/acmpca/README.md
index 700a7b8..7ab62c0 100644
--- a/acmpca/README.md
+++ b/acmpca/README.md
@@ -10,42 +10,24 @@ reference.  Other documentation states otherwise (TBD -- find link).
 It expects an SSM parameter `/enterprise/pki/ca1` for general purpose and `/enterprise/pki/ca2` for short term CA to exist in the account (distributed to all OUs from a central account).
 If this parameter does not exist, this module will fail.
 
-It returns:
+You may select from the available templates for the specific CA from the [SSM Paramter](https://github.e.it.census.gov/terraform/cloud-information/blob/master/aws/documentation/organizations/shared-secrets-parameters/parameters/enterprise_pki.md).
+Currently, only the `end-entity` (used for typical server or LB certificates) and `subordinate-ca` types are permitted and shared to the organization.  Client Auth, Server Auth,
+and Passthrough certificate types may be made availble in the future as need dictates.
+
+We are also unable to support [custom attributes](https://docs.aws.amazon.com/privateca/latest/userguide/PcaIssueCert.html) at this time.
+
+This module returns:
 
 # Usage
 This shows the module call with how you would use it.
 
-```hcl
-module "cert" {
-  source = "git@github.e.it.census.gov:terraform-modules/aws-certificates//acm"
-
-  certificate_dns      = "test.domain.census.gov"
-  contact_email        = "cio.engineering.alert.list@census.gov"
-
-  ## optional
-  ## add additional names to SAN
-  # certificate_san    = [ "otherdomain.domain.census.gov" ]
-}
-
-# associating it with the ALB listener
-resource "aws_lb_listener" "app_443" {
-  count             = module.cert.certificate_arn != null ? 1 : 0
-  load_balancer_arn = aws_lb.app.arn
-  port              = 443
-  protocol          = "HTTPS"
-  ssl_policy        = "ELBSecurityPolicy-TLS-1-2-2017-01"
-  certificate_arn   = module.cert.certificate_arn
-
-  default_action {
-    type             = "forward"
-    target_group_arn = aws_lb_target_group.app.arn
-  }
-}
-```
-
 The output value to look at is `certificate_arn`.  This is null if the certificate is incomplete or failed to load into ACM, or
 the ARN if completed.   You'll use the ARN for an AWS LB Listener.
 
+# Links
+* https://docs.aws.amazon.com/privateca/latest/userguide/UsingTemplates.html
+* https://docs.aws.amazon.com/privateca/latest/userguide/PcaIssueCert.html
+
 ## Requirements
 
 | Name | Version |
@@ -63,6 +45,7 @@ the ARN if completed.   You'll use the ARN for an AWS LB Listener.
 | <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.0 |
 | <a name="provider_local"></a> [local](#provider\_local) | >= 2.1.0 |
 | <a name="provider_null"></a> [null](#provider\_null) | >= 3.1.0 |
+| <a name="provider_random"></a> [random](#provider\_random) | n/a |
 | <a name="provider_tls"></a> [tls](#provider\_tls) | >= 3.1.0 |
 
 ## Modules
@@ -79,6 +62,7 @@ No modules.
 | [local_sensitive_file.certificate_csr](https://registry.terraform.io/providers/hashicorp/local/latest/docs/resources/sensitive_file) | resource |
 | [local_sensitive_file.certificate_key](https://registry.terraform.io/providers/hashicorp/local/latest/docs/resources/sensitive_file) | resource |
 | [null_resource.output_directory](https://registry.terraform.io/providers/hashicorp/null/latest/docs/resources/resource) | resource |
+| [random_uuid.filename](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/uuid) | resource |
 | [tls_cert_request.certificate](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/cert_request) | resource |
 | [tls_private_key.certificate](https://registry.terraform.io/providers/hashicorp/tls/latest/docs/resources/private_key) | resource |
 | [aws_arn.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/arn) | data source |
@@ -97,11 +81,13 @@ No modules.
 | <a name="input_certificate_authority_template"></a> [certificate\_authority\_template](#input\_certificate\_authority\_template) | String indicating which specific ACMPCA template to use | `string` | `null` | no |
 | <a name="input_certificate_chain_filename"></a> [certificate\_chain\_filename](#input\_certificate\_chain\_filename) | Filename for Certificate Chain (signer, intermediate(s) and root). Defaults to {certificate\_dns}.chain.crt | `string` | `null` | no |
 | <a name="input_certificate_cn"></a> [certificate\_cn](#input\_certificate\_cn) | CommonName (CN) to use for certificate, defaults in c=US,o=U.S. Census Bureau,ou=Servers. This will typically be the DNS name.  Uses certificate\_dns if not provided. | `string` | `null` | no |
-| <a name="input_certificate_dns"></a> [certificate\_dns](#input\_certificate\_dns) | DNS Name to be used for the certificate.  For ACM certificate, the subject and CN may not be customized. | `string` | n/a | yes |
+| <a name="input_certificate_dns"></a> [certificate\_dns](#input\_certificate\_dns) | DNS Name to be used for the certificate.  One of certificate\_dns or certificate\_cn must be provided. | `string` | `null` | no |
 | <a name="input_certificate_filename"></a> [certificate\_filename](#input\_certificate\_filename) | Filename for Certificate. Defaults to {certificate\_dns}.crt | `string` | `null` | no |
+| <a name="input_certificate_ip_addresses"></a> [certificate\_ip\_addresses](#input\_certificate\_ip\_addresses) | List of IP Addresses to be used in the CSR.  It is not recommended to use this for any service with auto-assigned addressing. | `string` | `[]` | no |
 | <a name="input_certificate_san"></a> [certificate\_san](#input\_certificate\_san) | The Subject Alternate Names (SAN), a list of FQDNs to include in the ACM Certificate. Only DNS names are supported.  See docs at https://docs.aws.amazon.com/cli/latest/reference/acm/request-certificate.html | `list(string)` | `[]` | no |
 | <a name="input_certificate_subject_overrides"></a> [certificate\_subject\_overrides](#input\_certificate\_subject\_overrides) | Map of c, o, and ou to override certificate signing request settings.  Note that only a single OU is permitted. | `map(string)` | `{}` | no |
 | <a name="input_certificate_type"></a> [certificate\_type](#input\_certificate\_type) | Selection of type of certificate, either end-entity or subordinate-ca.  Note that the subordinate-ca type is not available for the short lived CA mode | `string` | `"end-entity"` | no |
+| <a name="input_certificate_uris"></a> [certificate\_uris](#input\_certificate\_uris) | List of URIs to be used in the CSR. | `string` | `[]` | no |
 | <a name="input_contact_email"></a> [contact\_email](#input\_contact\_email) | Email address in @census.gov of contact for the certificate.  This is strongly recommended to be a group email address. | `string` | n/a | yes |
 | <a name="input_create_files"></a> [create\_files](#input\_create\_files) | Flag controlling the creation of output files for the key, CSR, and certificate and bundle. | `bool` | `false` | no |
 | <a name="input_csr_filename"></a> [csr\_filename](#input\_csr\_filename) | Filename for Certificate Signing Request (CSR). Defaults to {certificate\_dns}.csr | `string` | `null` | no |
@@ -118,6 +104,6 @@ No modules.
 | <a name="output_certificate"></a> [certificate](#output\_certificate) | PEM format for signed certificate |
 | <a name="output_certificate_chain"></a> [certificate\_chain](#output\_certificate\_chain) | PEM format for certificate chain (issuer through root) |
 | <a name="output_certificate_csr"></a> [certificate\_csr](#output\_certificate\_csr) | PEM format Certificate Signing Request |
-| <a name="output_certificate_files"></a> [certificate\_files](#output\_certificate\_files) | Map of certificate file names |
+| <a name="output_certificate_filenames"></a> [certificate\_filenames](#output\_certificate\_filenames) | Map of certificate file names |
 | <a name="output_certificate_key"></a> [certificate\_key](#output\_certificate\_key) | PEM format RSA Key |
 <!-- END_TF_DOCS -->
\ No newline at end of file
diff --git a/acmpca/certificate.tf b/acmpca/certificate.tf
index 4c835c9..ebf3df7 100644
--- a/acmpca/certificate.tf
+++ b/acmpca/certificate.tf
@@ -6,8 +6,17 @@ locals {
   ca_type     = lookup(local._defaults["template"], var.certificate_type, null)
   ca_settings = var.certificate_authority_mode == "general" ? local.ca_longterm_settings : local.ca_shortterm_settings
 
-  output_file_directory = var.output_file_directory != null ? var.output_file_directory : format("%v/%v", path.root, "certs")
+  output_file_directory  = var.output_file_directory != null ? var.output_file_directory : format("%v/%v", path.root, "certs")
+  _cert_filename         = coalesce(var.certificate_cn, local.cert_dns)[0]
+  generate_cert_filename = try(regex("[^a-zA-Z0-9_-.]", local._cert_filename, false))
+  cert_filename          = local.generate_cert_filename ? local._cert_filename : random_uuid.filename.result
+}
 
+resource "random_uuid" "filename" {
+  count = local.generate_cert_filename ? 1 : 0
+  keepers = {
+    generate_cert_filename = local.generate_cert_filename
+  }
 }
 
 resource "tls_private_key" "certificate" {
@@ -20,11 +29,21 @@ resource "tls_cert_request" "certificate" {
   dns_names       = local.cert_san
 
   subject {
-    common_name         = local.cert_dns
+    common_name         = coalesce(var.certificate_cn, local.cert_dns)[0]
     country             = lookup(var.certificate_subject_overrides, "c", local._defaults.certificate["c"])
     organization        = lookup(var.certificate_subject_overrides, "o", local._defaults.certificate["o"])
     organizational_unit = lookup(var.certificate_subject_overrides, "ou", local._defaults.certificate["ou"])
   }
+
+  ip_addresses = var.certificate_ip_addresses
+  uris         = var.certificate_uris
+
+  lifecycle {
+    precondition {
+      condition     = var.certificate_cn != null && local.cert_dns != null
+      error_message = "One of the certificate_cn or certificate_dns must be provided and not null."
+    }
+  }
 }
 
 resource "aws_acmpca_certificate" "certificate" {
@@ -70,10 +89,10 @@ resource "null_resource" "output_directory" {
 }
 
 locals {
-  filename_key   = var.key_filename != null ? var.key_filename : format("%v/%v.%v", local.output_file_directory, local.cert_dns, "key")
-  filename_csr   = var.csr_filename != null ? var.csr_filename : format("%v/%v.%v", local.output_file_directory, local.cert_dns, "csr")
-  filename_crt   = var.certificate_filename != null ? var.certificate_filename : format("%v/%v.%v", local.output_file_directory, local.cert_dns, "crt")
-  filename_chain = var.certificate_chain_filename != null ? var.certificate_chain_filename : format("%v/%v.%v", local.output_file_directory, local.cert_dns, "chain.crt")
+  filename_key   = var.key_filename != null ? var.key_filename : format("%v/%v.%v", local.output_file_directory, local.cert_filename, "key")
+  filename_csr   = var.csr_filename != null ? var.csr_filename : format("%v/%v.%v", local.output_file_directory, local.cert_filebame, "csr")
+  filename_crt   = var.certificate_filename != null ? var.certificate_filename : format("%v/%v.%v", local.output_file_directory, local.cert_filename, "crt")
+  filename_chain = var.certificate_chain_filename != null ? var.certificate_chain_filename : format("%v/%v.%v", local.output_file_directory, local.cert_filename, "chain.crt")
 }
 
 resource "local_sensitive_file" "certificate_key" {
diff --git a/acmpca/main.tf b/acmpca/main.tf
index d923b3f..eec8676 100644
--- a/acmpca/main.tf
+++ b/acmpca/main.tf
@@ -9,42 +9,24 @@
 * 
 * It expects an SSM parameter `/enterprise/pki/ca1` for general purpose and `/enterprise/pki/ca2` for short term CA to exist in the account (distributed to all OUs from a central account).
 * If this parameter does not exist, this module will fail.
-* 
-* It returns:
 *
-* # Usage
-* This shows the module call with how you would use it.
+* You may select from the available templates for the specific CA from the [SSM Paramter](https://github.e.it.census.gov/terraform/cloud-information/blob/master/aws/documentation/organizations/shared-secrets-parameters/parameters/enterprise_pki.md).
+* Currently, only the `end-entity` (used for typical server or LB certificates) and `subordinate-ca` types are permitted and shared to the organization.  Client Auth, Server Auth,
+* and Passthrough certificate types may be made availble in the future as need dictates.
 *
-* ```hcl
-* module "cert" {
-*   source = "git@github.e.it.census.gov:terraform-modules/aws-certificates//acm"
+* We are also unable to support [custom attributes](https://docs.aws.amazon.com/privateca/latest/userguide/PcaIssueCert.html) at this time.
 * 
-*   certificate_dns      = "test.domain.census.gov"
-*   contact_email        = "cio.engineering.alert.list@census.gov"
-*
-*   ## optional
-*   ## add additional names to SAN
-*   # certificate_san    = [ "otherdomain.domain.census.gov" ]
-* }
+* This module returns:
 *
-* # associating it with the ALB listener
-* resource "aws_lb_listener" "app_443" {
-*   count             = module.cert.certificate_arn != null ? 1 : 0
-*   load_balancer_arn = aws_lb.app.arn
-*   port              = 443
-*   protocol          = "HTTPS"
-*   ssl_policy        = "ELBSecurityPolicy-TLS-1-2-2017-01"
-*   certificate_arn   = module.cert.certificate_arn 
-* 
-*   default_action {
-*     type             = "forward"
-*     target_group_arn = aws_lb_target_group.app.arn
-*   }
-* }
-* ```
+* # Usage
+* This shows the module call with how you would use it.
 *
 * The output value to look at is `certificate_arn`.  This is null if the certificate is incomplete or failed to load into ACM, or
 * the ARN if completed.   You'll use the ARN for an AWS LB Listener.
+*
+* # Links
+* * https://docs.aws.amazon.com/privateca/latest/userguide/UsingTemplates.html
+* * https://docs.aws.amazon.com/privateca/latest/userguide/PcaIssueCert.html
 */
 
 locals {
diff --git a/acmpca/output.tf b/acmpca/output.tf
index 43afa30..4a884f4 100644
--- a/acmpca/output.tf
+++ b/acmpca/output.tf
@@ -22,7 +22,7 @@ output "certificate_chain" {
   value       = local.certificate_chain
 }
 
-output "certificate_files" {
+output "certificate_filenames" {
   description = "Map of certificate file names"
   sensitive   = false
   value = {
@@ -33,5 +33,3 @@ output "certificate_files" {
     chain       = local.filename_chain
   }
 }
-
-
diff --git a/acmpca/variables.tf b/acmpca/variables.tf
index 5b500ae..3864104 100644
--- a/acmpca/variables.tf
+++ b/acmpca/variables.tf
@@ -1,6 +1,7 @@
 variable "certificate_dns" {
-  description = "DNS Name to be used for the certificate.  For ACM certificate, the subject and CN may not be customized."
+  description = "DNS Name to be used for the certificate.  One of certificate_dns or certificate_cn must be provided."
   type        = string
+  default     = null
 }
 
 variable "certificate_san" {
@@ -21,6 +22,18 @@ variable "certificate_cn" {
   default     = null
 }
 
+variable "certificate_ip_addresses" {
+  description = "List of IP Addresses to be used in the CSR.  It is not recommended to use this for any service with auto-assigned addressing."
+  type        = string
+  default     = []
+}
+
+variable "certificate_uris" {
+  description = "List of URIs to be used in the CSR."
+  type        = string
+  default     = []
+}
+
 variable "certificate_subject_overrides" {
   description = "Map of c, o, and ou to override certificate signing request settings.  Note that only a single OU is permitted."
   type        = map(string)
diff --git a/common/version.tf b/common/version.tf
index fa2705b..374ba43 100644
--- a/common/version.tf
+++ b/common/version.tf
@@ -1,3 +1,3 @@
 locals {
-  _module_version = "1.0.0"
+  _module_version = "1.0.1"
 }