# OPC tag - quality - error configuration **URL:** \ **Category:** Ignition\ **Created:** [August 1, 2023, 11:06am UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210 "2023-08-01T11:06:00Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Sudhanthiralakshmi\_M](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Sudhanthiralakshmi\_M](https://forum.inductiveautomation.com/u/Sudhanthiralakshmi_M)\ **Post date:** [August 1, 2023, 11:06am UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/1 "2023-08-01T11:06:00Z")
While Binding OPC Tags in Ignition Designer(8.0.15) we got "null" error configuration , but in ignition Gateway the same opc tag we can able to "read" the tag value but the "subscription" is showing "Error configuration". is there any interlink to siemens plc Simatic s71200 for this error config issue ![gateway Error config](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/2/b258bc9c64cf410bc64faa0f7867a906930bec2c.jpeg) ![OPC Tag- Error config - Designer](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/b/db82c59e6eabf3bae4120486491e17fa0afb46a4.jpeg) ---
**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\ **Post date:** [August 1, 2023, 11:22am UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/2 "2023-08-01T11:22:37Z")
Looks like you've hit a limit on the server. [https://support.industry.siemens.com/cs/document/109755846/what-are-the-system-limits-of-the-opc-ua-server-with-s7-1500-and-s7-1200-?dti=0&lc=en-HN](https://support.industry.siemens.com/cs/document/109755846/what-are-the-system-limits-of-the-opc-ua-server-with-s7-1500-and-s7-1200-?dti=0&lc=en-HN) ---
**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\ **Post date:** [August 1, 2023, 11:24am UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/3 "2023-08-01T11:24:21Z")
This thread may help. > [@OPC UA Server Connected, all tags bad](https://forum.inductiveautomation.com/t/opc-ua-server-connected-all-tags-bad/35069/8): > > The server is telling you there are already too many monitored items created. If there are other OPC UA clients connected you might need to budget how many items each can subscribe to. You might even need to do that with just Ignition connected. You could also put all these tags into a Polled/Read mode scan class instead, and they’ll be polled instead of subscribed on the server. ---
**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:** [August 1, 2023, 12:38pm UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/4 "2023-08-01T12:38:24Z")
Whoops. This is happens with the native driver: > It can also happen if you subscribe to an address in a data block that is off the end of the DB (or the data type extends off the end), the rest of the subscribed tags in that data block will go bad too. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [August 1, 2023, 12:39pm UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/5 "2023-08-01T12:39:55Z")
It can, with the Siemens driver, but this is clearly a direct connection to the onboard server via OPC UA and it’s the issue Jordan mentioned. You can see the monitored item error in one of the screenshots. Edit: yep you caught that too ---
**Author:** ![Sudhanthiralakshmi\_M](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Sudhanthiralakshmi\_M](https://forum.inductiveautomation.com/u/Sudhanthiralakshmi_M)\ **Post date:** [August 1, 2023, 1:39pm UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/6 "2023-08-01T13:39:28Z")
Thanks for the response @JordanCClark .we Need some more clarification on too many monitored items. since our PLC Tags share the data to two systems one with ignition and other with siemens scada. will it be difficult for ignition to subscribe the OPC Tags ---
**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\ **Post date:** [August 1, 2023, 5:56pm UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/7 "2023-08-01T17:56:58Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/0/104077a1f4681e710a4ea5900381bbcce43448a3.png) I'd see what the setting is for maximum monitored elments, first. Looks like you can set that through TIA Portal, but I'm not a Siemens guy, so that's about all I can help there. Otherwise if you don't really need a sunbscription, you could propbably set the scan class to read instead of subscribe, as described in the the thread I linked to. ---
**Author:** ![Sudhanthiralakshmi\_M](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Sudhanthiralakshmi\_M](https://forum.inductiveautomation.com/u/Sudhanthiralakshmi_M)\ **Post date:** [August 2, 2023, 9:07am UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/8 "2023-08-02T09:07:11Z")
where do i find in ignition gateway to put all tags under polled/read mode ---
**Author:** ![JordanCClark](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jordancclark/32/83362_2.png) [@JordanCClark](https://forum.inductiveautomation.com/u/JordanCClark)\ **Post date:** [August 2, 2023, 1:12pm UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/9 "2023-08-02T13:12:19Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/8/e832dd783cbf6abb9cc8f729883bc301ba102395.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/3/13c0965c99dd710ec31b73284af34a8639f39a24.png) ---
**Author:** ![Sudhanthiralakshmi\_M](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@Sudhanthiralakshmi\_M](https://forum.inductiveautomation.com/u/Sudhanthiralakshmi_M)\ **Post date:** [August 10, 2023, 7:21am UTC](https://forum.inductiveautomation.com/t/opc-tag-quality-error-configuration/77210/10 "2023-08-10T07:21:40Z")
Thanks for the suggestions. Now it works well