A combination of a managing unit for managing first messages originating from a plurality of monitored objects (1-1, 1-2,...1-n), said first messages having data indicating with sets of parameter values event situations of said monitored objects (1-1, 1-2,...1-n), and a configuration file, said managing unit comprising: - an input unit for receiving said first messages, - an output unit for sending at least one second message to at least one monitoring unit and - a rule engine unit, - said rule engine unit having a function of converting said first messages, wherein said first messages have different first formats, into at least one of said second messages having a second format with a selection of or all of -- said parameter values and/or -- transformations of said parameter values, - said event situations being exception situations in a data centre environment, - said rule engine unit comprising -- a routing unit for defining for said second messages network destination nodes in accordance with routing conditions, -- a function to enrich at least one of said second messages with message enrichment data, and wherein said routing unit is adapted to receive said routing conditions from said message enrichment data in response to specific parameter values of a first message among said first messages, and - said rule engine unit comprises a function of parsing a plurality of said routing conditions for each of a network node among said network destination nodes, and - said configuration file has data for defining at least one of: -- said second format, -- rules for combining said message enrichment data with said parameter values or their transformations, and -- a file having said message enrichment data, and wherein said rule engine unit is adapted to receive said configuration file and is adapted to configure said function of converting with said data of said configuration file. - an input unit for receiving said first messages, - an output unit for sending at least one second message to at least one monitoring unit and - a rule engine unit, - said rule engine unit having a function of converting said first messages, wherein said first messages have different first formats, into at least one of said second messages having a second format with a selection of or all of -- said parameter values and/or -- transformations of said parameter values, -- said parameter values and/or -- transformations of said parameter values, - said event situations being exception situations in a data centre environment, - said rule engine unit comprising -- a routing unit for defining for said second messages network destination nodes in accordance with routing conditions, -- a function to enrich at least one of said second messages with message enrichment data, and wherein said routing unit is adapted to receive said routing conditions from said message enrichment data in response to specific parameter values of a first message among said first messages, and -- a routing unit for defining for said second messages network destination nodes in accordance with routing conditions, -- a function to enrich at least one of said second messages with message enrichment data, and - said rule engine unit comprises a function of parsing a plurality of said routing conditions for each of a network node among said network destination nodes, and - said configuration file has data for defining at least one of: -- said second format, -- rules for combining said message enrichment data with said parameter values or their transformations, and -- a file having said message enrichment data, and wherein said rule engine unit is adapted to receive said configuration file and is adapted to configure said function of converting with said data of said configuration file. -- said second format, -- rules for combining said message enrichment data with said parameter values or their transformations, and -- a file having said message enrichment data, and