What is CICS ISSUE ERROR command used for?

CICS ISSUE ERROR is used to send error messages to users or systems, providing notification of error conditions, validation failures, and system problems.

What types of error messages can be sent?

Error types include validation errors (input, format, range), business logic errors (rules, processing, workflow), system errors (resources, connections, permissions), and data errors (access, integrity, locking).

How do I handle errors with CICS ISSUE ERROR?

Always check the response code and implement appropriate error handling, including validation of error requests, retry mechanisms for failed deliveries, and fallback procedures for communication errors.

What is the purpose of error messaging?

Error messaging enables user notification, error communication, problem diagnosis, audit trail maintenance, and system integration by providing clear information about error conditions.

When should I use CICS ISSUE ERROR?

Use this command when you need to notify users of error conditions, provide error feedback, maintain error logs, or integrate error handling with other systems.

CICS ISSUE ERROR - Error Message Control

CICS ISSUE ERROR provides error message capabilities for programs and transactions. It enables programs to send error messages, manage error notifications, and handle error messaging in CICS environments.

What is CICS ISSUE ERROR?

CICS ISSUE ERROR is a command that allows programs to send error messages to users or other systems. It provides error messaging capabilities, user notification, and error management for CICS applications.

Command Syntax

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EXEC CICS ISSUE ERROR
    [MESSAGE(message-text)]
    [LENGTH(message-length)]
    [RESP(response-code)]
END-EXEC

Parameters

Optional Parameters

MESSAGE(message-text) - Error message text
LENGTH(message-length) - Length of message text
RESP(response-code) - Response code variable

Error Types

Validation Errors

Data validation and input errors

• INPUT VALIDATION - Input data validation errors
• FORMAT ERRORS - Data format validation errors
• RANGE ERRORS - Data range validation errors
• REQUIRED FIELD ERRORS - Required field errors

Business Logic Errors

Business rule and logic errors

• BUSINESS RULE ERRORS - Business rule violation errors
• PROCESSING ERRORS - Processing logic errors
• WORKFLOW ERRORS - Workflow violation errors
• STATE ERRORS - Invalid state errors

System Errors

System-level and resource errors

• RESOURCE ERRORS - Resource allocation errors
• CONNECTION ERRORS - Connection failure errors
• PERMISSION ERRORS - Authorization errors
• SYSTEM ERRORS - System-level errors

Data Errors

Data access and manipulation errors

• DATA ACCESS ERRORS - Data access failure errors
• DATA INTEGRITY ERRORS - Data integrity violation errors
• DATA LOCK ERRORS - Data locking errors
• DATA CONVERSION ERRORS - Data conversion errors

Programming Examples

Basic Error Message

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ERROR01.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  MESSAGE-TEXT    PIC X(50) VALUE 'Invalid input data provided'.
       01  MESSAGE-LENGTH  PIC S9(8) COMP VALUE 50.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       01  ERROR-CONDITION PIC X(1) VALUE 'Y'.
       
       PROCEDURE DIVISION.
           IF ERROR-CONDITION = 'Y'
               DISPLAY 'Sending error message...'
               
               EXEC CICS ISSUE ERROR
                   MESSAGE(MESSAGE-TEXT)
                   LENGTH(MESSAGE-LENGTH)
                   RESP(RESPONSE-CODE)
               END-EXEC
               
               IF RESPONSE-CODE = DFHRESP(NORMAL)
                   DISPLAY 'Error message sent successfully'
                   DISPLAY 'Message: ' MESSAGE-TEXT(1:MESSAGE-LENGTH)
               ELSE
                   DISPLAY 'Failed to send error message'
               END-IF
           ELSE
               DISPLAY 'No error condition detected'
           END-IF
           
           EXEC CICS RETURN END-EXEC.

Advanced Error Management

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ERROR02.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  MESSAGE-TEXT    PIC X(100).
       01  MESSAGE-LENGTH  PIC S9(8) COMP.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       01  ERROR-TYPE      PIC X(1).
       01  ERROR-SEVERITY  PIC X(1).
       01  USER-ID          PIC X(8) VALUE 'USER001'.
       
       PROCEDURE DIVISION.
           PERFORM VALIDATE-INPUT
           
           IF ERROR-TYPE NOT = 'N'
               PERFORM SEND-ERROR-MESSAGE
           ELSE
               DISPLAY 'Input validation successful'
           END-IF
           
           EXEC CICS RETURN END-EXEC.
       
       VALIDATE-INPUT.
           *> Add validation logic here
           MOVE 'V' TO ERROR-TYPE
           MOVE 'H' TO ERROR-SEVERITY.
       
       SEND-ERROR-MESSAGE.
           EVALUATE ERROR-TYPE
               WHEN 'V'
                   MOVE 'Validation error: Invalid input format' TO MESSAGE-TEXT
                   MOVE 40 TO MESSAGE-LENGTH
               WHEN 'B'
                   MOVE 'Business logic error: Rule violation' TO MESSAGE-TEXT
                   MOVE 38 TO MESSAGE-LENGTH
               WHEN 'S'
                   MOVE 'System error: Resource unavailable' TO MESSAGE-TEXT
                   MOVE 40 TO MESSAGE-LENGTH
               WHEN 'D'
                   MOVE 'Data error: Access denied' TO MESSAGE-TEXT
                   MOVE 30 TO MESSAGE-LENGTH
               WHEN OTHER
                   MOVE 'Unknown error occurred' TO MESSAGE-TEXT
                   MOVE 22 TO MESSAGE-LENGTH
           END-EVALUATE
           
           EXEC CICS ISSUE ERROR
               MESSAGE(MESSAGE-TEXT)
               LENGTH(MESSAGE-LENGTH)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           IF RESPONSE-CODE = DFHRESP(NORMAL)
               DISPLAY 'Error sent to user: ' USER-ID
               DISPLAY 'Error message: ' MESSAGE-TEXT(1:MESSAGE-LENGTH)
           ELSE
               DISPLAY 'Failed to send error message'
           END-IF.

Error Handling with Error Messages

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       IDENTIFICATION DIVISION.
       PROGRAM-ID. ERROR03.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01  MESSAGE-TEXT    PIC X(50) VALUE 'Processing error occurred'.
       01  MESSAGE-LENGTH  PIC S9(8) COMP VALUE 50.
       01  RESPONSE-CODE   PIC S9(8) COMP.
       01  RETRY-COUNT     PIC S9(2) COMP VALUE 0.
       01  MAX-RETRIES     PIC S9(2) COMP VALUE 3.
       
       PROCEDURE DIVISION.
           PERFORM PROCESS-WITH-ERROR-HANDLING
           
           EXEC CICS RETURN END-EXEC.
       
       PROCESS-WITH-ERROR-HANDLING.
           PERFORM PROCESS-LOGIC
           
           IF ERROR-CONDITION-DETECTED
               PERFORM SEND-ERROR-WITH-RETRY
           ELSE
               DISPLAY 'Processing completed successfully'
           END-IF.
       
       PROCESS-LOGIC.
           *> Add processing logic here
           *> Set error condition if needed
           MOVE 'N' TO ERROR-CONDITION.
       
       SEND-ERROR-WITH-RETRY.
           PERFORM SEND-ERROR-MESSAGE
           
           IF RESPONSE-CODE NOT = DFHRESP(NORMAL)
               AND RETRY-COUNT < MAX-RETRIES
               ADD 1 TO RETRY-COUNT
               DISPLAY 'Retry ' RETRY-COUNT ' sending error message'
               PERFORM SEND-ERROR-WITH-RETRY
           END-IF.
       
       SEND-ERROR-MESSAGE.
           EXEC CICS ISSUE ERROR
               MESSAGE(MESSAGE-TEXT)
               LENGTH(MESSAGE-LENGTH)
               RESP(RESPONSE-CODE)
           END-EXEC
           
           EVALUATE RESPONSE-CODE
               WHEN DFHRESP(NORMAL)
                   DISPLAY 'Error message sent successfully'
               WHEN DFHRESP(INVREQ)
                   DISPLAY 'Invalid error request'
               WHEN DFHRESP(LENGERR)
                   DISPLAY 'Message length error'
               WHEN DFHRESP(COMMERR)
                   DISPLAY 'Communication error occurred'
               WHEN OTHER
                   DISPLAY 'Unexpected error occurred'
           END-EVALUATE.

Error Management

Error Detection

• Error Identification - Identify error conditions
• Error Classification - Classify error types
• Error Severity - Determine error severity
• Error Context - Capture error context

Error Communication

• Error Messaging - Send error messages
• User Notification - Notify users of errors
• Error Logging - Log error information
• Error Tracking - Track error occurrences

Error Recovery

• Error Recovery - Recover from errors
• Retry Mechanisms - Implement retry logic
• Fallback Procedures - Use fallback procedures
• Error Prevention - Prevent future errors

Error Analysis

• Error Analysis - Analyze error patterns
• Error Reporting - Report error statistics
• Error Monitoring - Monitor error frequency
• Error Improvement - Improve error handling

Error Handling

Common Response Codes

DFHRESP(NORMAL) - Error message sent successfully
DFHRESP(INVREQ) - Invalid error request
DFHRESP(LENGERR) - Message length error
DFHRESP(COMMERR) - Communication error
DFHRESP(NOTAUTH) - Not authorized to send error
DFHRESP(SYSTEMERR) - System error occurred

Performance Considerations

Error Efficiency

• Optimize error messages - Use clear, concise error messages
• Minimize error overhead - Reduce error processing overhead
• Use appropriate error types - Choose appropriate error classifications
• Monitor error frequency - Track error occurrence patterns

System Impact

• Monitor system impact - Track how errors affect the system
• Optimize error handling - Ensure efficient error processing
• Manage resource usage - Monitor resource consumption
• Track performance metrics - Monitor error handling performance

Best Practices

Error Message Best Practices

• Use clear and descriptive error messages
• Provide actionable error information
• Implement proper error handling
• Ensure error message delivery
• Monitor error message success rates
• Use appropriate error severity levels
• Maintain error message audit trails

Explain It Like I'm 5 Years Old

Think of CICS ISSUE ERROR like telling someone something went wrong:

• Something Wrong: "Something went wrong with your homework" - Error detected
• Tell Someone: "Tell mom what went wrong" - Send error message
• Explain Clearly: "Explain it clearly so she understands" - Clear error message
• Ask for Help: "Ask her to help you fix it" - Request assistance
• Learn from It: "Learn from the mistake" - Error prevention

Exercises

Exercise 1: Basic Error Message

Create a program that sends a basic error message when an error condition is detected.

Exercise 2: Conditional Error Messages

Write a program that sends different error messages based on error type and severity.

Exercise 3: Error Handling

Implement comprehensive error handling with error message delivery and retry mechanisms.

CICS ISSUE ERROR - Error Message Control

What is CICS ISSUE ERROR?

Command Syntax

Parameters

Optional Parameters

Error Types

Validation Errors

Business Logic Errors

System Errors

Data Errors

Programming Examples

Basic Error Message

Advanced Error Management

Error Handling with Error Messages

Error Management

Error Detection

Error Communication

Error Recovery

Error Analysis

Error Handling

Common Response Codes

Performance Considerations

Error Efficiency

System Impact

Best Practices

Error Message Best Practices

Explain It Like I'm 5 Years Old

Exercises

Exercise 1: Basic Error Message

Exercise 2: Conditional Error Messages

Exercise 3: Error Handling

Related Concepts

Error Handling

Message Handling

User Communication

Validation

Debugging

Related Pages