I am trying to assign Storage account lifecycle management policy using terraform. The lists of more than 30 containers are defined in the input.tfvars file as lists of strings. “resource azurerm_storage_management_policy lifecycle” code is given below. But it is giving error as ManagementPolicy rule Rule1 is invalid.Too many prefixMatch. How do I resolve it.

The code details in my git is given below.

input.tfvars –

containername = ["a", "b", "c", "d", "e", "f", "g".................................]

This list includes more than 30 container names.

variables.tf —

variable "containername" {
  type    = list(string)
  default = []
}

main.tf —

locals {
   folderlist1  = ["a", "b", "c", "d", "e", "f", "g"................................30+ container_names...]
   list1 = [ for a in local.folderlist1: a ]
 }
 output "result1" {
     value = local.list1
}
resource "azurerm_storage_management_policy" "lifecycle" {
  storage_account_id = azurerm_storage_account.sa.id
  rule{
    name    = "Rule1"
    enabled = true
    filters {
      prefix_match = local.list1
      blob_types   = ["blockBlob"] 
    }
    actions {
      base_blob {
        delete_after_days_since_modification_greater_than = 15
      }
      snapshot {
        delete_after_days_since_creation_greater_than = 15
      }
    }
  }
}

Giving error as ManagementPolicy rule Rule1 is invalid. Too many prefixMatch