1. A method for a network node in a wireless communication network for generating inaccuracy characteristics associated with a fingerprinting positioning algorithm used to determine a position of a user equipment (UE) in said wireless communication network, said method comprising: determining a fingerprinting position reference, based on said fingerprinting positioning algorithm, for said user equipment; determining a high-accuracy position reference for said user equipment; comparing said fingerprinting position reference and said high-accuracy position reference to generate an error value; generating at least one inaccuracy characteristic based on a plurality of said error values; registering a geographical region associated with said fingerprinting position reference, for said user equipment; and associating said at least one inaccuracy characteristic with said geographical region, wherein said at least one inaccuracy characteristic is based on at least one of: a cumulative distribution function algorithm and an uncertainty shape at a predefined confidence level algorithm and further wherein said uncertainty shape is determined based on a two-dimensional covariance matrix.