Unable to apply policy to key

When using Tyk-Sync to transfer configs onto a new environment, you may encounter the error below when creating a new key using one of the transferred policies. To resolve the issue, please enable the parameters mentioned in our doc.

https://tyk.io/docs/tyk-sync/#prerequisites

• allow_explicit_policy_id: true  
• enable_duplicate_slugs: true 
• policies.allow_explicit_policy_id: true

Failed to save new session object to Tyk: Failed to create key - policy not found: "xxxxxxxxxxxxxxxxxx"