-20447   FORMAT STRING format-string IS NOT VALID FOR THE function-name FUNCTION

An invalid format string was specified for the function.

format-string

The invalid format string. The format might be invalid for one or more of the following reasons:

• The format string contains unsupported format elements or separator characters.
• The format string does not contain a format element, is the empty string, or is all blanks.
• The length of the format string argument exceeds the maximum allowable length.
• A format element is specified multiple times.
• The format string contains too many format elements.
• The format string contains multiple format elements that represent the same component. For example, the TIMESTAMP_FORMAT function must not specify both YYYY and YY, which are format elements to indicate the year, in the format string.
• A parameter marker was specified for the first argument and the format string includes a time zone format element

function-name

The name of the function.