How To Fix CPOC138 - Incorrect declaration of global variable &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CPOC - PP-PI-PMA: Process Operator Cockpit Messages

• Message number: 138

• Message text: Incorrect declaration of global variable &1

What causes this issue?

Global variables can only be defined and used in <LS>simple data
requests</> at this time. It is <ZH>not </> possible to output whole
tables (<LS>repeated data request
</>) again using global variables.
This can lead to errors in, for example, the following cases:
For live and test control recipes:
If you <ZH>define</> a global variable in a <LS>repeated data request
</> (table) for the same process order in the one control recipe and
then, in a different control recipe, have <ZH>declared</> a <LS>simple
data request</>, the program will terminate when you send the control
recipe.
For test control recipes:
If you have <ZH>declared</> the global variable in a <LS>repeated data
request</> for the same process order in a test control recipe and then
generate a new test control recipe in which you have <ZH>declared</>
the same global variable again in a <LS>simple data request</>, the
program will terminate when you send the second control recipe.

System Response

The control recipe cannot be sent. The function is terminated.

How to fix this error?

Change the declaration of the global variables &V1& in the process
order.
You can use indexing of global variables to transfer individual line
values of a table to a different control recipe. You add the <LS>_1</>,
<LS>_2 </>, <LS>_3</> and so on behind the global variable &V1& for
each table line.
Example:
&V1&_1: Variable for the value in line 1
&V1&_2: Variable for the value in line 2
&V1&_3: Variable for the value in line 3
Each variable must be declared separately.
Generate the control recipe again.
Resend the control recipe.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CPOC138 - Incorrect declaration of global variable &1 ?

  The SAP error message CPOC138, which states "Incorrect declaration of global variable &1," typically occurs in the context of ABAP programming, particularly when dealing with global variables in your code. This error indicates that there is an issue with how a global variable has been declared or used in your program.
  Cause:
  
  Incorrect Declaration: The global variable may not be declared correctly in the global declaration section of your program or class.
  Scope Issues: The variable might be declared in a scope that does not allow it to be accessed where it is being used.
  Data Type Mismatch: The variable may have been declared with a data type that is incompatible with how it is being used.
  Missing Declaration: The variable might not be declared at all, leading to confusion in the code.
  Namespace Conflicts: There could be a conflict with another variable or object in the same namespace.
  
  Solution:
  
  Check Declaration: Review the declaration of the global variable in your program. Ensure that it is declared in the correct section (e.g., in the global data section of a report or module pool).
  Verify Scope: Ensure that the variable is declared in a scope that is accessible from where you are trying to use it.
  Data Type Consistency: Check that the data type of the variable matches its usage throughout the program. If you are performing operations on it, ensure that the operations are valid for its data type.
  Declare the Variable: If the variable is missing, declare it properly in the global declaration section.
  Namespace Management: If there are conflicts, consider renaming the variable or using a more specific namespace to avoid ambiguity.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for guidelines on variable declaration and scope management.
  Debugging Tools: Use the ABAP debugger to step through your code and identify where the variable is being accessed incorrectly.
  Code Review: Conduct a code review with peers to identify potential issues in variable declarations and usage.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CPOC138 error and ensure that your global variable is correctly declared and used in your ABAP program.