Dynamic sessions and dynamic forms

In LN the sessions and forms are dynamic. The appearance of a dynamic session/form is not fixed but can differ per situation.


This list is an overview of the key characteristics of dynamic sessions and dynamic forms.

  • Form layout
    The form layout is dynamic: the position of fields and labels is not fixed, but can differ per situation. At runtime, the same form can be displayed in multiple ways.

    The runtime appearance of the form is based on this criteria:

    • The content, labels and fields. The structure, grouping of labels and fields of the form. The sequence of fields and groups in the form definition.
    • The table field authorizations of the user, if any. If a user is not authorized for a table field, the field including its label completely disappears from the form. The position of the remaining form fields is rearranged automatically.

      See Impact of table field authorizations.

    • The mode in which the session is run. Dynamic sessions can run in overview mode and in details mode.
  • Editor
    Forms are edited through the Dynamic Form Editor (DFE). This editor is a separate utility and must be installed, from the LN installation CD, on the client PC.

    See Dynamic Form Editor

  • Session generation
    You can create sessions through the Sessions (ttadv2500m000) session. For each session, an empty dynamic form is generated automatically. You must use the Dynamic Form Editor to generate the form fields.
  • Session and form integration
    Sessions and forms are integrated. There is a one to one relationship between sessions and forms: each form is linked to a session and each session has only one form. You can directly edit the form by clicking Edit Form in the Sessions (ttadv2500m000) session.
  • Single form for each session
    Each session has only one form. A form can consist of multiple field groups. At runtime, these groups can be displayed as parallel form tabs. In the Dynamic Form Editor, fields can be moved from one field group to another.
  • Combination of overview and details session
    Dynamic sessions can run in 2 modes: overview mode and details mode. Therefore, a single dynamic session can be used as an overview session and as a details session.

    See Combined overview and details session.

  • Dynamic Index Switching
    If Dynamic Index Switching is implemented for a session, the layout of the form changes automatically when a user selects another index. For example, through the Sort by command in the session's View menu. The runtime layout of the form changes according to the selected index.

    For example:

    • The order of fields in the session's grid changes.
    • Different fields are displayed in the view area above the session's grid.

    See To implement dynamic index switching.

  • Text boxes
    Text fields can be displayed as text boxes, where you can type the text directly. You can also edit texts with a text editor.
  • Appearance of enum and string fields
    In the Dynamic Form Editor, you can define how enumerated fields and string fields must be displayed. For example, you can indicate whether an enumerated field is displayed as a check box, a drop-down list box, or as an option set.
  • Form commands
    Multiple form commands can be defined for each session/form. Form commands are used to start a session, a function, a business method or a menu. Form commands can be started by buttons or through the appropriate menu in the session. You can create form commands in the Form Commands (ttadv3518m000) session.

Dynamic Form Editor

The Dynamic Form Editor (DFE) is not an LN session, but a separate utility that must be installed, from the LN installation CD, on the client PC.

Use this editor to define the form fields (including their labels), field groups and alignment settings for a form. In the editor, the form is displayed as a list of fields and field groups. The editor offers preview options to view the runtime layout of the form, when editing.

This screenshot shows the Employees - General (tccom0101m000) session in the DFE:

Form of Employees (tccom0101m000) session in the DFE

The dynamic form in the screenshot contains various types of components:

  • Table fields, for example the tccom001.emno field.
  • Table fields with a reference to another table, for example the tccom001.clan field.
  • Non-table fields, for example. variables from the session's program script. For example: the user.desc field.
  • Field groups, for example the General and Employment groups.

Each component type has its own icon. The icon in the form's upper left corner represents the entire session. Here you can modify session properties, such as the runtime appearance of field groups, on a single page, or on multiple form tabs.

Note: For detailed information see the DFE online help. You can access this online help through the Help menu in the DFE or by pressing F1 in the DFE.

Combined overview and details session

LN contains various sessions that are used as both an overview session and a details session.

For example:

  • Employees - General (tccom0101m000)
  • Items - Freight Management (fmfmd1100m000)
  • Standard Routes (fmlbd0150m000)
  • Tasks (tsmdm0115m000)
  • Service Areas (tsmdm1105m000)

When you start such a combined session, the session runs in overview mode. A list of records is displayed. You can double-click a record, click New or Duplicate in the overview session, to start the same session in details mode. A dialog box, where you can edit a single record, is displayed.

In the DFE, you can specify per field or group whether the field or group must be displayed in overview mode or in details mode. For details,see "Field properties" and "Group properties" in the DFE online help.

Note: Overview session and details session are not always the same session. In many cases the overview session and the details session are separate sessions.

For example:

  • The Business Partners (tccom4500m000) overview session and the Business Partner (tccom4100s000) details session.
  • The Addresses (tccom4530m000) overview session and the Addresses (tccom4130s000) details session.

Impact of table field authorizations

The runtime appearance of a dynamic form is influenced by the table field authorizations of the user, if any. If a user is not authorized for a table field, the field, including its label, completely disappears from the form. The position of the remaining form fields is rearranged automatically.

Note: Table field authorizations can be defined through the Specific menu in the Role Data (ttams2100m000) session. For details refer to Defining authorizations.


In LN you can use these sessions to maintain dynamic sessions and dynamic forms:

  • Sessions (ttadv2500m000)
  • Forms (ttadv3500m000)
  • Form Commands (ttadv3518m000)
  • Convert session to dynamic (ttadv2900m000)