> ## Documentation Index > Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt > Use this file to discover all available pages before exploring further. # Creating a Service REST method > Build a Pega Service REST POST method for exporting files to a case: create the service package, add the PegaAPI role, and define response conditions. First, you need to create a service package: 1. Click the **Records** tab on the left, expand **Integration Resources**, right-click **Service Package**, and select the **Create** command from the shortcut menu. 2. On the **Create Service Package** form, type *customapi* in the **Service Package Name** field. Provide a description for the package in the **Short description** field and click **Create and open**. 3. On the **Edit Service Package** form, specify an access group in the **Service access group** field (the format of the group is *\:\*).\ **Note:** To view the list of available access groups, click the **Records** tab on the left and navigate to **Security → Access Group**. 4. Click **Save**. Next, you need to add a new role to the access group to enable users to access the Web API: 1. Go to the newly created access group by clicking **Records → Security → Access Group → ABBYYFC:Administrators/ABBYYFC:Users**. 2. In the **Available roles** field, add a *PegaRULES:PegaAPI* role. Now you need to create a new service: 1. Click the **Records** tab on the left, expand **Integration-Services**, right-click **Service REST**, and select the **Create** command from the shortcut menu. 2. On the form that opens, specify the following: * Service name: *files* * Service package name: *customapi* * URI Template: *cases/\{id}/files/\{name}* * Service version: *v2* 3. Click **Create and open**. 4. Click the **Service** tab and type *Pega-API-CaseManagement* in the **Pega class** field. In the **URL path parameters** section, type *Param.CaseId* in the **Map to Key** column for the **Id** parameter. Then type *Param.FileName* for the **name** parameter. 5. Click the **Methods** tab. Expand the POST method and on the **Request** tab, specify the following for the **Message data** fields: * Description: *Request Data* * Map to: *Clipboard* * Map to key: *Param.Request* 6. Click the **Response** tab and create three response conditions:

Process what

Parameter values

Header fields

Message data

pxIsInternalError

  • Condition: When
  • When name: pxIsInternalError
  • Content type: application/json
  • Status code: Param.StatusCode
  

pxIsErrorResponse

  • Condition: When
  • When name: pxIsErrorResponse
  • Content type: application/json
  • Status code: Param.StatusCode
 
  • Description: Response
  • Map from: Clipboard
  • Map from key: Param.Response

Success response

  • Condition: Default
  • Content type: application/json
  • Status code: Param.StatusCode
  • Name: location: Map from: Clipboard; Map from key: Param.Location
  • Name: etag; Map from: Clipboard; Map from key: Param.eTag
  • Description: Response
  • Map from: Clipboard
  • Map from key: Param.Response
Make sure that the URL of the service method is as follows: *https\://Server\_Name/prweb/PRRestService/customapi/v2/cases/\{id}/files/\{name}.* Otherwise, the connector will return an error when the user attempts to export a file to Pega.