What causes the RANAP SECURITY MODE REJECT from RNC to CORE?

What causes the RANAP SECURITY MODE REJECT from RNC to CORE?
cause: radionetwork-conflict with already existingintegrity protection and or ciphering information

How do you rectify this?

check security mode command message from two domain (PS & CS Domain)

check if PS core to activate encryption ?

its from cs domain

Activate encryption in PS also .

on RNC end?
what is MO?
so i align RNC to encryptions on the core network.

yes in RNC :check FromEutraRelocationCiphering = cipheringEnabled

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this isnt a 4g site.

Is there a parameter for relocation from 3G PDP to voice?

fromEutraRelocationCiphering� is used to control ciphering activation for incoming LTE to WCDMA HO during PSHO LTE > UMTS

*RNC/PsCoreNetworkAccess/FromEutraRelocationCiphering = cipheringEnabled

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Checking the security messages showed PS was encrypted while CS was not encrypted.
since its cross vender. i switched off encryption on RNC

any provemnt after disabling encryption on RNC

yes. the failures are no longer showing up on Random iu trace.

good ,also you can ask CS team to enable encryption & keep encryption in PS enabled .