Beginner DataFlex errors everyone makes

This is a collection of common errors we have come across that might stump beginners and new developers we are onboarding. We will continue adding them as new ones are found.

74 - Entry does not exist in Filelist. Table = (<Tablenumber>)

Error: 74 Error Source = Flexdrvr.Open

This is usually caused by an entry to the table is missing in the Filelist. Open the filelist and confirm there is an entry.

75 - Can't open table. Table = <TABLENAME> (<TABLENUMBER>)

Error 75 Error Source = Flexdrvr.Open

This is usually caused by

When SQL

INT file missing
- Check the path for your data directory in Config.ws and ensure it's there.
Database table is missing
- Check your table exists in the database.
Check that the filelist is pointing to an INT file correctly

When embedded

DAT file missing
Check the path for your data directory in Config.ws and ensure it's there

72 - Table not open Tablenumber = <TABLENUMBER>

Error: 72 Error Source = API.Get_Attribute

This is usually caused by

Using a table before it has been opened.
If using data dictionaries, ensure all open statements are at the top of the data dictionary that the Data Dictionary may use.

Open <TABLE>

This method was previously defined as overloaded

This happens when a method is defined as a different way
In our case, it was String msg
- msg_ is for procedures, like get_ is for functions
- This causes a conflict
- Change to _msg
- No more issues

Illegal code placement Could not refind the original name in struct(-sub) definition.

The problem was

struct tAStruct
    Real capital
End_Struct

Capital is reserved, but needed for JSON. Since our JSON needs it so, we can add the meta-name value ot set it.

And the fix was

struct tAStruct
    { Name=capital }
    Real _capital
End_Struct