Understanding a Query/400 Error Message

Environment: Older version of Query/400

Hi Mapics ML group:

We run two groups of jobs every Friday that consists of
groups of queries related to the updating of standard
costs for materials and direct labor (routing time).

One of the input DB files that is common to these queries
is called DATECTRL and it consists of one record that is
updated weekly that has current date information, such as
the dates of the beginning and ending of the current week,
the dates of the beginning and ending of the current
month, etc.

These jobs have been running well for years but this
morning they didn't run because of the following types of
error messages given off by the system:

Level for file DATECTRL in SLK [Library name} does not
match query (I C).
C

Level for file DATECTRL in SLK [Library name} does not
match query (I C).
I

It look like one error message was give off for each query
in the job that used the DATECTRL DB input file.

I looked at the DATECTRL DB file with its one record, that
was last updated on Sunday, Nov 23rd, and it looks fine.

Can someone advise me what the above error messsage means
and what I and C mean?

I look forward to hearing from you on this matter.

Regards,
Al Gershen
ECS Composites
Grants Pass, OR
aldg1@charter.net