Understanding Lookup function module signature

Lookup function module signature.

1. Go to Connector > Lookup.
2. Go to the Function tab.
3. Provide values for the following fields
   • System ID - Select the system ID from the list.
   • Function Name - Enter a specific function or a function name with * for matching the similarly named functions.
   • Group Name - Enter the group name to filter the functions that belongs to the group.
4. Click Apply to see the list of functions that match the criteria.
5. Select the function to view. Example, select Z_RFC_ADD.

   Class

   Class indicating the general type of the field.

   • I – Input (Import)
   • C® – Changing (Import or Export)
   • E – Output (Export)
   • T – Table
   • X – Exception

   Parameter

   Parameter name.

   Table

   Table name.

   Type

   Data type allowed.

   • CHAR - Character
   • INTx – Integer values of various lengths (INT, INT1, INT2, INT8)
   • NUM – Numeric values
   • BCD – Binary coded decimal values
   • DATE – Date values (various types)
   • TIME – Time values (various types)
   • FLOAT – Floating-point values
   • BYTE – Byte values
   • STRING – String values
   • XSTRING – String values (in raw bytes)
   • ABAPOBJECT – ABAP objects
   • STRUCTURE – Data structure of given type
   • TABLE – Table structure of given type
   • EXCEPTION – Exception string

   Length

   Length of the field if applicable, else 0.

   Decimals

   Number of digits that are allowed after the decimal point. Used only for float or fixed-point numeric data types.

   Optional

   Indicator to show whether the field is mandatory or optional.

   • Yes
   • No

   Test Function

   Run the function with given input parameters.