How To Fix OA639 - Enter the control command to be called

OA639 - Overview

• Message type: E = Error

• Message class: OA - SAP ArchiveLink: Messages for SAP ArchiveLink

• Message number: 639

• Message text: Enter the control command to be called

Applications can be controlled by calling object methods, setting
object attributes, or retrieving object attributes.
The exact sequence and syntax of control calls can be found in the
documentation of the application to be controlled.
A distinction is made between 3 control commands:
Method call
Syntax: <(><<)>method name> <(><<)>variable name>
or <(><<)>method name> = <(><<)>variable name>
When a method is called, several variables can be passed which must be
separated by a comma
Getting an object attribute (not for Apple)
Syntax: <(><<)>variable name> = <(><<)>attribute>
Setting an object attribute (not for Apple)
Syntax: <(><<)>attribute> = <(><<)>variable name>
It is possible to pass variables in the control calls. The following
variables are defined and are evaluated:
@AID Storage system ID
@DPA File name on the frontend
@DTI Document class
@DID Document ID
@SPA Path on the application server
@STA Window ID
@ATI Number of retrieved files
@ADA Names of retrieved files
@UID User name
@LAN Logon language
@ETX Error text
@DPO Document path
@PAG Page number
@FPA Frontend path
@EID Error number/Returncode
@STA Status of stored document
@ATI Storage time of stored document
@ADA Storage date of stored document
@LSI,,,,Logical system (unique system identification for the SAP
System)

How can this happen?

Call Word for Windows to display a local file in Word format
Application: word.basic
Method call: fileopen @DPA
Call Word for Windows to display a FAX file
Application: word.basic
Method calls: FileNew
InsertPicture @DPA
Call Word for Windows to determine the file name of the displayed file
(function "archive file on frontend")
Application: word.basic
Method calls: filename= @FPA
filesaveas c:\SAPFILE
filename= @DPA
fileclose
filenew
fileopen @FPA, 0

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

What causes this issue?

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message OA639 - Enter the control command to be called ?

  The SAP error message OA639, which states "Enter the control command to be called," typically occurs in the context of using the SAP system for certain operations, particularly when dealing with control commands in the context of production orders, maintenance orders, or similar processes.
  
  Cause:
  The error usually arises when:
  
  A required control command is not specified in the relevant field.
  The system expects a specific input that has not been provided, leading to a failure in processing the request.
  There may be a configuration issue or a missing entry in the system that is preventing the command from being recognized.
  
  
  Solution:
  To resolve the OA639 error, you can take the following steps:
  
  
  Check Input Fields: Ensure that all required fields are filled out correctly. Look for any fields that may be marked as mandatory and ensure they are populated.
  
  
  Enter Control Command: If the system prompts for a control command, make sure to enter the appropriate command that