# Transaction Group Errors - does not allow writing to the Node **URL:** \ **Category:** Ignition\ **Tags:** ignition81, perspective\ **Created:** [July 31, 2024, 8:05pm UTC](https://forum.inductiveautomation.com/t/transaction-group-errors-does-not-allow-writing-to-the-node/94002 "2024-07-31T20:05:54Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Estera\_Cioroch](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/estera_cioroch/32/59889_2.png) [@Estera\_Cioroch](https://forum.inductiveautomation.com/u/Estera_Cioroch)\ **Post date:** [July 31, 2024, 8:05pm UTC](https://forum.inductiveautomation.com/t/transaction-group-errors-does-not-allow-writing-to-the-node/94002/1 "2024-07-31T20:05:54Z")
I have a transaction group that keeps getting the Error "Bad\_NotWritable: The access level does not allow writing to the Node."...What exactly is it referring to when it says the Node? Has anyone seen this error before? I have a device simulator programmed and in the Status \> Logs it's showing the following error as well so I think the simulator is at the root of it: ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/4/940ef8363e2ed1ad54d839d5c4b5d684b74cb5d9.png) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [July 31, 2024, 8:08pm UTC](https://forum.inductiveautomation.com/t/transaction-group-errors-does-not-allow-writing-to-the-node/94002/2 "2024-07-31T20:08:10Z")
That means you've configured something in the DB=\>OPC direction, and that OPC target is read-only. Or it's an Ignition tag set to read-only. Or you are triggering from a read-only OPC source and you've configured the transaction group to reset it.