Authentic deed is one type of evidence in the form of letter and made in writing , the
written evidence in a civil case is the most important proof its different than in the criminal
case , this evidence is authentic deed expressly regulated in the law of civil procedure law ,
authentic act evidence must be made in writing by the competent authority and presence to
make it , as set out in the legislation , one of the officials authorized to make this authentic act
is a notary public officer , within the procedure to make authentic deed shall comply with the
provisions of the regulated in the legislation , evidence in the authentic deed law civil law is
said to have the strength of evidence that a perfect and authentic act is binding which can not
be denied the power of proofing by judges in courts and also by the parties , to be able to
have the strength of evidence that perfect and authentic act is binding it must meet three
requirements , namely requirements beyond the strength of evidence , proving the strength of
the material and the strength of formal verification , in fact, the strength of evidence is
authentic deed can be canceled and declared invalid or void by a judge in the District Court in
the case of Sleman No.125/Pdt/2010/PN. based on the description above , the formulation of
problems that need to be reviewed is how the strength of the evidence made by authentic act
that a notary public officials in civil proceedings and proving why the judges in Sleman
District Court can invalidate an authentic deed made by a notary public officials , the research
methods used in legal writing this is a research method in which the normative study focused
on the legislation were deemed incompatible with the facts that occurred.