Value Cannot be Changed for TCD

Hi, i am getting TCD value from another doctype if i try to change the TCD date value and submit the record i am getting the following popup message as “Value Cannot be Changed for TCD”… any one help me out to overcome from this error message

Hi, can anybody help me out?

It seems TCD is a field in your code - a forum search on ‘tcd’ turned up this Set Value Into Child table field

Hi all, i set set only once for the field ‘TCD’ that’s why i got this error… after unset the set only once i do not get this error.