Failed to set security (-12) whn the connection is happening on UART example

[sotillo2409]

Hi everybody,

I am with two custom oards that include nrf52840 chip, one acting as central and one as peripheal.

This example is custom to get multilink, for that i save the handlers of connections on array to make the managments. 

I succes connecting my central to an nrf53 without problems, but when i try to connect to the nrf52840 (only one at the same time currently) i get this error when the connected function is triggered

Produced by:

Somebody can help me o discover why and how to close it?

Thank everybody,

regards.

[sotillo2409]

All is happening on SDK 1.6.1 and nRF connect 3.7.1