Resolving the "Error: Duplicate required providers configuration" in Terraform involves identifying and correcting the redundant provider configurations in your Terraform code. This error typically occurs when the same provider is declared multiple times within your Terraform configuration files, leading to conflicts. 

Here are steps to troubleshoot and resolve this issue:

1. Understand the Error
This error indicates that Terraform has found multiple definitions for the same provider within your configuration files. Terraform expects each provider to be defined only once in the required_providers block.

2. Check for Duplicate Provider Definitions
Look through your Terraform configuration files for duplicate required_providers blocks. These are usually found in versions.tf, main.tf, or any other .tf files where providers are configured.

3. Consolidate Provider Definitions
Ensure that each provider is defined only once in your configuration. If you find duplicates, consolidate them into a single definition. For example:

Before Consolidation:

versions.tf:

terraform {
  required_providers {
    aws = {
      source  = "cloudishsoft"
      version = "~> 1.0"
    }
  }
  required_version = ">= 0.10.1"
}

main.tf:
terraform {
  required_providers {
    aws = {
      source  = "cloudishsoft"
      version = "~> 1.1"
    }
  }
}


After Consolidation:

versions.tf or main.tf (pick one place):
terraform {
  required_providers {
    aws = {
      source  = "cloudishsoft"
      version = "~> 1.1"
    }
  }
  required_version = ">= 0.10.1"
}