change the result of the map data

Would be in better position to help if you paste the code responsible or explain the output better. Example, first map has 3 emails in it but the expected output you are expecting has just the first email but thrice (why?) and what happens to the other two emails within first map 

• "test2@gmail.com:3"(Text)
• "test3@gmail.com:3"(Text)

You can use the a!update() function to create a map with dynamic key names.

• Duplicate keys are not allowed in a map or dictionary.
• You can use the a!update() function to create dynamic keys, as Stefan mentioned in his reply. You can refer to this example for guidance.
  
  
  

  a!localVariables(
    local!returnedDataFromRule: {
      a!map(
        mail: {
          "test1@gamil.com:1",
          "test2@gamil.com:2",
          "test3@gamil.com:3"
        },
        period: "01/2024"
      ),
      a!map(
        mail: { "test@gamil.com:4",  },
        period: "01/2024"
      )
    },
    local!keysAndValues: a!forEach(
      items: a!flatten(
        property(local!returnedDataFromRule, "mail", "")
      ),
      expression: a!map(
        key: split(fv!item, ":")[1],
        value: split(fv!item, ":")[2]
      )
    ),
    a!update(
      data: a!map(),
      index: { property(local!keysAndValues, "key", "") },
      value: {
        property(local!keysAndValues, "value", ""),
        
      }
    ),
    
  )

Hi Eren,

Thanks for the reply, I need Period value Aswell along with emails  

for example, 

• test@gmail.com:1"(Text)
• "test@gmail.com:1"(Text)
• "test@gmail.com:1"(Text)
• period"01/2024"(Text)

Thanks in Advance.

Hi Mufeeda,
In your example data i can see multiple periods ,but in output you want only one ? if yes then what is the period id that you want ? if no then as I mentioned above we can not have duplicate keys.

below is the code for getting all the unique period valus 

a!localVariables(
  local!returnedDataFromRule: {
    a!map(
      mail: {
        "test1@gamil.com:1",
        "test2@gamil.com:2",
        "test3@gamil.com:3"
      },
      period: "01/2024"
    ),
    a!map(
      mail: { "test@gamil.com:4"},
      period: "01/2024" 
      
    )
  },
  local!keysAndValues: a!forEach(
    items: a!flatten(
      property(local!returnedDataFromRule, "mail", "")
    ),
    expression: a!map(
      key: split(fv!item, ":")[1],
      value: split(fv!item, ":")[2]
    )
  ),
  local!periods: a!flatten(
    property(local!returnedDataFromRule, "period", "")
  ),
  local!emails: a!update(
    data: a!map(),
    index: {
      property(local!keysAndValues, "key", ""),
      
    },
    value: {
      property(local!keysAndValues, "value", ""),
      
    }
  ),
  a!update(
    data: local!emails,
    index: "period",
    value: union(local!periods,local!periods)
  )
)