update networkLoadBalancer errors with "400-InvalidParameter, Invalid backend OCID"

[dhoogfr]

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Terraform Version and Provider Version

Terraform v1.10.3
on linux_amd64
+ provider registry.terraform.io/hashicorp/tfe v0.55.0
+ provider registry.terraform.io/oracle/oci v6.21.0

Affected Resource(s)

oci_network_load_balancer_backend_set

Terraform Configuration Files

# Copy-paste your Terraform configurations here - for large Terraform configs,
# please use a service like Dropbox and share a link to the ZIP file. 
# Please remove any sensitive information from configuration files before sharing them. 

Debug Output

https://gist.github.com/dhoogfr/ea310c2243cc85ee2cca9a2a0739cc31

Panic Output

Expected Behavior

Network load balancer backendset health check is updated

Actual Behavior

TF complains that the id of the backendset is invalid.
However, the ID in the debug log matches the ID in the state file and seems to match actual the ID
networkLoadBalancers/ocid1.networkloadbalancer.oc1.eu-frankfurt-1.amaaaaaatqcdh6qamvwdcz5hu4paanyta6i2dygth5fsfltenn4j5hsklsca/backendSets/bs-hub-dns-psa

(I say seems, as there is no direct way to view the ID on the OCI web console or via the OCI CLI, but it does match the format described in the TF resource and the LB OCID and backendset name matches)

Steps to Reproduce

1. Create a network load balancer
2. Update the health check config of the LB
3. terraform apply

Important Factoids

References

[tf-oci-pub]

Thank you for reporting the issue. We have raised an internal ticket to track this. Our service engineers will get back to you.

[antonyselvajohnson-thyineshma]

This error indicates that the provided backend target OCID is invalid. Could you please check the target_id parameter in the backends and ensure it is either null or not being used if it is not required?