The cases decided under section 1196.1 and its predecessors, sections 1203 and 1203a, make it clear that mistakes and errors, including those with respect to the amount due, will not invalidate a lien in the absence of a finding of intent to defraud

If there is a single unifying thread which explains most, though not all, of the bewildering array of cases in this field, it is the principle that where the purpose of the requirement of section 1193.1, subdivision (j)(4), is achieved and no one is prejudiced, technical requirements shall not stand in the way of achieving the purpose of the Mechanics Lien Law