Diagnosis
The node NODEID = [&V1&] is an interval node. The value ranges [LEAFFROM- LEAFTO] = [&V3&] and [&V4&] of the two interval nodes overlap. This isnot allowed because both nodes are child nodes of the same parent nodeNODEID = &V2&.
Note that a maximum of 50 characters is available for message variables.For this reason the value ranges [LEAFFROM - LEAFTO] = [&V3&] and [&V4&]might not be displayed correctly.

Procedure
Try to localize the problem. If the hierarchy is loaded from an SAPsource system, you can check whether the extracted data is correct byexecuting transaction RSA3 in the source system. If necessary, check ifthe data is modified with a user exit. If the hierarchy is loaded from afile, check the contents of this file. The problem might also be due toan error in the transfer rules or in the transformation.
You can identify the two duplicate nodes from the values for the node IDNODEID = [&V1&].
The problem can be caused by identical nodes delivered more than oncefrom the source. It is also possible that incorrect values forparameters such as the node name NODENAME or validity period [DATEFROM,DATETO] are the cause of the problem.
First check if the boundaries of the interval for the value ranges ofthe two nodes [LEAFFROM - LEAFTO] = [&V3&] and [&V4&] are correct. Theboundaries of the interval consist of the characteristic value for thehierarchy basic characteristic and the characteristic values of all thecharacteristics compounded to this characteristic. Errors creating theinterval boundaries often result in duplicate nodes.
If the structure of the hierarchy is defined as time-dependent, the timevalidity of a node can be restricted with the fields DATEFROM andDATETO. Duplicate nodes generally do not occur if the validity intervalsof two nodes do not overlap in time. In this case check if the fieldsDATEFROM and DATETO are correctly filled.