Try each of the following steps until the issue is resolved:

  1. In Gradebook select the correct marking column and view posted grades in Faculty Access for the Web. Compare the marking columns grade to the posted grade column.
  2. On the Course record, ensure the Values allowed on the Grading information is consistent with posting parameters.
  3. Ensure the cutoff value for the letter grades  are correct in the Translation table.
If the above steps do not resolve the issue:
Contact Support and reference this article.