SubString Error in Logic App - URGENT Please help RRS feed

  • Question

  • Hi,

    I am trying to "truncate" the LAB_LOC_CD String to 6 chars which is in an Array of Strings. I am using



    and getting the following error:

    IInvalidTemplate. Unable to process template language expressions in action 'Append_to_array_variable' inputs at line '1' and column '2956': 'The template language function 'Substring' expects its first parameter 'string' to be a string. The provided value is of type 'Null'. Please see for usage details.'.





    Can someone please help? It is urgent that I get these strings correctly truncated.

    Mike Kiser

    Mike Kiser

    Tuesday, July 28, 2020 5:45 PM