A data processing method, implemented by a source node, the data processing method comprising: receiving a first request message from a target node, wherein the first request message comprises information about creation of a data acquisition task; and sending a first response message configured to respond to the first request message to the target node; wherein the information about creation of the data acquisition task comprises descriptive information of an acquired target data object; characterized in that one of the following applies: the descriptive information of the acquired target data object comprises a tag of the acquired target data object, the tag of the acquired target data object being a message tag in a signaling flow or a data tag in a target layer; or the descriptive information of the acquired target data object comprises a context acquisition condition of the acquired target data object and a tag of the acquired target data object; wherein the context acquisition condition of the acquired target data object comprises an acquisition condition, the acquisition condition comprising at least one of a reporting containing instruction or a reporting filtering instruction; and the tag of the acquired target data object is a message tag in a signaling flow or a data tag in a target layer. receiving a first request message from a target node, wherein the first request message comprises information about creation of a data acquisition task; and sending a first response message configured to respond to the first request message to the target node; wherein the information about creation of the data acquisition task comprises descriptive information of an acquired target data object; characterized in that one of the following applies: the descriptive information of the acquired target data object comprises a tag of the acquired target data object, the tag of the acquired target data object being a message tag in a signaling flow or a data tag in a target layer; or the descriptive information of the acquired target data object comprises a context acquisition condition of the acquired target data object and a tag of the acquired target data object; wherein the context acquisition condition of the acquired target data object comprises an acquisition condition, the acquisition condition comprising at least one of a reporting containing instruction or a reporting filtering instruction; and the tag of the acquired target data object is a message tag in a signaling flow or a data tag in a target layer. the descriptive information of the acquired target data object comprises a tag of the acquired target data object, the tag of the acquired target data object being a message tag in a signaling flow or a data tag in a target layer; or the descriptive information of the acquired target data object comprises a context acquisition condition of the acquired target data object and a tag of the acquired target data object; wherein the context acquisition condition of the acquired target data object comprises an acquisition condition, the acquisition condition comprising at least one of a reporting containing instruction or a reporting filtering instruction; and the tag of the acquired target data object is a message tag in a signaling flow or a data tag in a target layer.