export declare type DealErrorReason = 'CANNOT_ADD_LINE_ITEM_WHEN_SOLD' | 'CANNOT_ARCHIVE_LINE_ITEM_WHEN_SOLD' | 'CANNOT_ARCHIVE_PROPOSAL_WHEN_SOLD' | 'CANNOT_CHANGE_FIELD_REQUIRING_BUYER_APPROVAL' | 'CANNOT_GET_SELLER_ID' | 'CAN_ONLY_EXECUTE_IF_LOCAL_EDITS' | 'MISSING_PROPOSAL_LINE_ITEMS' | 'MISSING_ENVIRONMENT' | 'MISSING_AD_EXCHANGE_PROPERTY' | 'CANNOT_FIND_PROPOSAL_IN_MARKETPLACE' | 'CANNOT_GET_PRODUCT' | 'NEW_VERSION_FROM_BUYER' | 'PROPOSAL_OUT_OF_SYNC_WITH_MARKETPLACE' | 'NO_PROPOSAL_CHANGES_FOUND' | 'UNKNOWN';