The following section of FBI DO 556-73 defines the process for disputing information in your report.
16.34 Procedure to obtain change, correction or updating of Identification Records
If, after reviewing his/her Identification Record, the subject thereof believes that it is incorrect or incomplete in any respect and wishes changes, corrections, or updating of the alleged deficiency, he/she should make application directly to the agency which contributed the questioned information. The subject of a record may also direct his/her challenge as to the accuracy or completeness of an entry on his/her record to the FBI, Criminal Justice Information Services Division, Attn: SCU, Mod.D-2, 1000 Custer Hollow Road, Clarksburg, WV 26306. The FBI will then forward the challenge to the agency which submitted the data requesting that agency to verify or correct the challenged entry. Upon the receipt of an official communication directly from the agency which contributed the original information, the FBI CJIS Division will make any changes necessary in accordance with the information supplied by that agency.
It is important to understand that the FBI CJIS Division is not the source of the data appearing on your "rap sheet". All data is obtained from fingerprint submissions or related identification forms submitted to the FBI by local, state and federal agencies (e.g. local police department, state police, county court, circuit court, etc.). Consequently, the responsibility for authentication and correction of this information lies on the contributing agency.
If you believe your report shows inaccurate or incomplete information, you may request a correction by contacting the agency or agencies that submitted the information to the FBI, or you may send a written request directly to the FBI CJIS Division (as described above). The CJIS Division does not have the authority to modify any criminal history unless requested by the entity that submitted the original information.