[ibm_app_config_integration_en] Create EN integration failed Conflict - Duplicate source name

[ocofaigh]

We are intermittently getting a Duplicate source name error when using ibm_app_config_integration_en, however there is not duplication. Its a brand new App Config instance with no previous EN source added. We are even using a random string in the source name to ensure its globally unique:

 2025/12/10 11:27:38 Terraform plan |   # module.app_config.ibm_app_config_integration_en.app_config_integration_en[0] will be created
 2025/12/10 11:27:38 Terraform plan |   + resource "ibm_app_config_integration_en" "app_config_integration_en" {
 2025/12/10 11:27:38 Terraform plan |       + created_time     = (known after apply)
 2025/12/10 11:27:38 Terraform plan |       + description      = "The App Configuration integration to send notifications of events to users from the Event Notifications instance GUID 7829cdb8-8462-4a7d-b0a1-525e6b165ae2"
 2025/12/10 11:27:38 Terraform plan |       + en_endpoint      = "https://private.us-south.event-notifications.cloud.ibm.com"
 2025/12/10 11:27:38 Terraform plan |       + en_instance_crn  = "crn:v1:bluemix:public:event-notifications:us-south:a/abac0df06b644a9cabc6e44f55b3880e:7829cdb8-8462-4a7d-b0a1-525e6b165ae2::"
 2025/12/10 11:27:38 Terraform plan |       + en_source_name   = "rag-s-84t-app-config-en"
 2025/12/10 11:27:38 Terraform plan |       + guid             = (known after apply)
 2025/12/10 11:27:38 Terraform plan |       + href             = (known after apply)
 2025/12/10 11:27:38 Terraform plan |       + id               = (known after apply)
 2025/12/10 11:27:38 Terraform plan |       + integration_id   = (known after apply)
 2025/12/10 11:27:38 Terraform plan |       + integration_type = (known after apply)
 2025/12/10 11:27:38 Terraform plan |       + updated_time     = (known after apply)
 2025/12/10 11:27:38 Terraform plan |     }

I suspect this is a provider bug where provider is incorrectly retrying after initial attempt actually succeeded. We have seen it in the past with other resources too. (e.g. #6533).

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Terraform CLI and Terraform IBM Provider Version

• terraform 1.12.2
• provider 1.85.0

Affected Resource(s)

• ibm_app_config_integration_en

Terraform Configuration Files

https://github.com/terraform-ibm-modules/terraform-ibm-app-configuration/blob/main/main.tf

Debug Output

2025/12/10 11:29:47 Terraform apply | Error: [ERROR] Create EN integration failed Conflict - Duplicate source name.
 2025/12/10 11:29:47 Terraform apply | {
 2025/12/10 11:29:47 Terraform apply |     "StatusCode": 409,
 2025/12/10 11:29:47 Terraform apply |     "Headers": {
 2025/12/10 11:29:47 Terraform apply |         "Cache-Control": [
 2025/12/10 11:29:47 Terraform apply |             "no-store"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "Cf-Cache-Status": [
 2025/12/10 11:29:47 Terraform apply |             "DYNAMIC"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "Cf-Ray": [
 2025/12/10 11:29:47 Terraform apply |             "9abc67620d114f6d-IAD"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "Content-Language": [
 2025/12/10 11:29:47 Terraform apply |             "en-US"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "Content-Length": [
 2025/12/10 11:29:47 Terraform apply |             "66"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "Content-Type": [
 2025/12/10 11:29:47 Terraform apply |             "application/json; charset=utf-8"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "Date": [
 2025/12/10 11:29:47 Terraform apply |             "Wed, 10 Dec 2025 11:29:47 GMT"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "Server": [
 2025/12/10 11:29:47 Terraform apply |             "cloudflare"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "Strict-Transport-Security": [
 2025/12/10 11:29:47 Terraform apply |             "max-age=31536000; includeSubDomains"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "X-Envoy-Upstream-Service-Time": [
 2025/12/10 11:29:47 Terraform apply |             "27836"
 2025/12/10 11:29:47 Terraform apply |         ],
 2025/12/10 11:29:47 Terraform apply |         "X-Powered-By": [
 2025/12/10 11:29:47 Terraform apply |             "Servlet/4.0"
 2025/12/10 11:29:47 Terraform apply |         ]
 2025/12/10 11:29:47 Terraform apply |     },
 2025/12/10 11:29:47 Terraform apply |     "Result": {
 2025/12/10 11:29:47 Terraform apply |         "code": "FTEC1025E",
 2025/12/10 11:29:47 Terraform apply |         "message": "Conflict - Duplicate source name."
 2025/12/10 11:29:47 Terraform apply |     },
 2025/12/10 11:29:47 Terraform apply |     "RawResult": null
 2025/12/10 11:29:47 Terraform apply | }
 2025/12/10 11:29:47 Terraform apply | 
 2025/12/10 11:29:47 Terraform apply | 
 2025/12/10 11:29:47 Terraform apply |   with module.app_config.ibm_app_config_integration_en.app_config_integration_en[0],
 2025/12/10 11:29:47 Terraform apply |   on ../../main.tf line 356, in resource "ibm_app_config_integration_en" "app_config_integration_en":
 2025/12/10 11:29:47 Terraform apply |  356: resource "ibm_app_config_integration_en" "app_config_integration_en" {

Panic Output

Expected Behavior

Actual Behavior

Steps to Reproduce

1. terraform apply

Important Factoids

References

• #0000