# Creating and Updating ABAP Function Modules (High-Level)
## Create Function Module
**Tool**: `CreateFunctionModule`
**Request**:
```json
{"function_group_name":"ZTEST_FG_001","function_module_name":"Z_TEST_FM_001","source_code":"FUNCTION z_test_fm_001.\n*\"----------------------------------------------------------------------\n*\"*\"Local Interface:\n*\" IMPORTING\n*\" VALUE(IV_INPUT) TYPE STRING\n*\" EXPORTING\n*\" VALUE(EV_OUTPUT) TYPE STRING\n*\"----------------------------------------------------------------------\n ev_output = iv_input.\nENDFUNCTION.","description":"Test function module","transport_request":"E19K905635","activate":true}
```
**Response**:
```json
{"success":true,"function_module_name":"Z_TEST_FM_001","function_group_name":"ZTEST_FG_001","uri":"/sap/bc/adt/functions/groups/ztest_fg_001/functions/z_test_fm_001","message":"Function module Z_TEST_FM_001 created and activated successfully","activation":{"activated":true,"checked":true,"generated":false},"hasActivationWarnings":false}
```
---
## Update Function Module
**Tool**: `UpdateFunctionModule`
**Request**:
```json
{"function_group_name":"ZTEST_FG_001","function_module_name":"Z_TEST_FM_001","source_code":"FUNCTION z_test_fm_001.\n*\"----------------------------------------------------------------------\n*\"*\"Local Interface:\n*\" IMPORTING\n*\" VALUE(IV_INPUT) TYPE STRING\n*\" EXPORTING\n*\" VALUE(EV_OUTPUT) TYPE STRING\n*\" CHANGING\n*\" VALUE(CV_VALUE) TYPE STRING\n*\"----------------------------------------------------------------------\n ev_output = iv_input.\n cv_value = 'Updated'.\nENDFUNCTION.","activate":true}
```
**Response**:
```json
{"success":true,"function_module_name":"Z_TEST_FM_001","function_group_name":"ZTEST_FG_001","uri":"/sap/bc/adt/functions/groups/ztest_fg_001/functions/z_test_fm_001","message":"Function module Z_TEST_FM_001 updated and activated successfully","activation":{"activated":true,"checked":true,"generated":false},"hasActivationWarnings":false}
```
