I refer to this document:

https://reference.opcfoundation.org/src/v104/Core/docs/Amendment4/readme.htm

In "Table 11 - Security" at ECC-nistP256_Limits
I read this:

DerivedSignatureKeyLength = 256
EncryptionKeyLength=256
InitializationVectorLength=128

I think the EncryptionKeyLength is obviously wrong,
because "Table 206a - SecurityPolicy - ECC-nistP256" specifies:

SymmetricEncryptionAlgorithm_AES128-CBC
SymmetricSignatureAlgorithm_HMAC-SHA2-256

... and as we know, AES128 has a key length of 128 bits and not 256 bits.

Likewise for ECC-brainpoolP256r1_Limits the value of
"EncryptionKeyLength=256" is wrong and should be
"EncryptionKeyLength=128" instead, because
"Table 206c - SecurityPolicy - ECC-brainpoolP256r1" specifies
the symmetric cipher algorithm as "SymmetricEncryptionAlgorithm_AES128-CBC".

suggested spec-change:

change the EncryptionKeyLength to 128 bits
for ECC-nistP256 and ECC-brainpoolP256r1
in the ECC Amendment or maybe in an Errata,
Note: This also affects the ProfileReporting Tool.