Check Check for uniqueness of the "customMetadata" key

[yangyansong-adbe]

Prerequisites

• This is not a Security Disclosure, otherwise please follow the guidelines in Security Policy.
• I have searched in this repository's issues to see if it has already been reported.

Feature request summary

"customMetadata": [
   {
     "name":"_DCBL.CUSTOMFIELD1",
     "value": "customValue1"
   },
   {
      "name":"_dcbl.customField1",
      "value": "customValue2"
   }
]

The Media Edge backend processes the provided data without distinguishing between uppercase and lowercase letters; the key will be converted to lowercase, and the value will be selected at random.
We need to consider the option of performing the uniqueness check on the Roku SDK side.

Current behavior

No response

Expected behavior

No response

Additional implementation details or code snippets

No response