Problem with FMP7

[jware]

I created solutions using Filemaker Pro versions 3 thru
5.5. In those versions each table is a seperate file
so relationships are always external except for
self joins.
In versions 7 when trying to add a
record using a portal the following error message
pop up: "This action cannot be performed because this
field is not modifiable." All settings seem to be correct.
My database has 3 tables: Budget, Income, and Expense.
I can add records from the Income layout and from the
expense layout but not from the Budget layout which
has portals that show records from Income and Expense.
This is my first effort at using FMP7 and is just for
getting used to the new version. What am I doing wrong?
Thanks,
Jware

 

[jware]

Please disregard this post; I had errors in key fields.
I am getting the hang of having all tables in one file
instead of a file for each table.
JWare