The error rate for exam entries in west of Scotland secondaries is only 3 per cent, despite schools' complaints about difficulties in checking the information the Scottish Qualifications Authority has sent back.
The SQA still uses numbers instead of names for candidates and subjects - largely for software reasons - and the system has come under fire for not being user-friendly.
After meeting the authority on Monday, directors of education were assured validation systems were far in advance of last year.
Shelagh Rae, director in Renfrewshire and an SQ board member, backed the decision not to implement the contentious "default pass" mechanism for reporting unit assessments and said it was too risky to make late changes.
Mrs Rae called on the national qualifications committee to look urgently at the future of internal assessment within Higher Still, an area outwith the SQA's remit.
Meanwhile, results are likely to be issued a week later than normal on August 14. Three out of four respondents in a consultation backed the delay, although some universities warned of a clash with A-level results.