Error in powerapp code when replacing th existing sharepoint list with new list having same data

Hi @SUPRIYAK ,

Firstly, try this syntax

ForAll(
   Filter(
      Clc_Befout_list,
      Temp_Status="New"
   ) As aPatch,
   Patch(
      AOA_TPT_Outage_Process_Demo_Response_SK1, 
	  {ID:aPatch.ID},
      {
         Response:aPatch.Response
         Start_Time: Var_Start_Time,
         End_Time: Now()
      }
   )
)

however your issue seems to be with the Response field - is the the original name of the field? Go to your List Settings, select the field and look at the end of the URL at the top to see the actual field name.

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@SUPRIYAK ,

It separates different "commands" or code instructions.