This value indicates whether or not the 'attribute discard' error handling mechanism is used for BGP UPDATE messages received from this peer. This mechanism applies when a BGP UPDATE message is received containing a malformed AGGREGATOR, AS4_AGGREGATOR, AS4_PATH or ATOMIC_AGGREGATE attribute. When set to 'false', the error handling mechanism defined in the original BGP specification is used, and the BGP session is reset. This can lead to session flapping and network instability, even though routing is not adversely affected by the presence of these malformed attributes. When set to 'true', the alternative error handling mechanism of 'attribute discard' is used, where the attribute is dropped and the rest of the BGP UPDATE message is processed as normal. Use of 'attribute discard' error handling is fixed at the start of a BGP session, so changes to this field take effect at the start of the next session.