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CICS SEND MAP - Send Map

CICS SEND MAP provides send map management capabilities, enabling send map processing and output processing in CICS environments. It provides efficient send map capabilities for CICS applications.

What is CICS SEND MAP?

CICS SEND MAP provides send map management capabilities, enabling send map processing and output processing. It provides efficient send map capabilities, allowing applications to manage send map operations.

Command Syntax

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EXEC CICS SEND MAP
    [RESP(response-code)]
    [RESP2(response-code-2)]
END-EXEC.

Parameters Explained

RESP Parameters

Response codes returned by the command:

  • RESP: Primary response code - indicates the success or failure of the send map operation
  • RESP2: Secondary response code - provides additional error information when RESP indicates failure
  • Always check these codes for command success before proceeding with data processing
  • Handle command failures appropriately to prevent application errors

Send Map Types

1. Basic Send Maps

  • Basic send maps: Standard send map operations that handle simple sending without special formatting
  • Mapped send maps: Send map operations that use predefined field mappings to structure send map data
  • Unmapped send maps: Raw send map operations that handle unstructured sending without predefined field mappings
  • Custom send maps: Specialized send map operations designed for specific application requirements

2. Advanced Send Maps

  • Advanced send maps: Complex send map operations that handle sophisticated sending processing and validation
  • Secure send maps: Send map operations that include encryption and security features for sensitive sending
  • Encrypted send maps: Send map operations that automatically encrypt send map data
  • Compressed send maps: Send map operations that handle compressed sending streams and automatically compress send map data

3. Specialized Send Maps

  • Specialized send maps: Send map operations tailored for specific protocols or communication methods
  • High-performance send maps: Optimized send map operations designed for maximum throughput and efficiency
  • Low-latency send maps: Send map operations optimized for minimal delay and real-time processing requirements
  • High-throughput send maps: Send map operations designed to handle large volumes of sending efficiently

Implementation Example

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WORKING-STORAGE SECTION.
01 WS-RESPONSE            PIC S9(8) COMP.
01 WS-RESPONSE2           PIC S9(8) COMP.
 
PROCEDURE DIVISION.
    * Send map operation
    EXEC CICS SEND MAP
        RESP(WS-RESPONSE)
        RESP2(WS-RESPONSE2)
    END-EXEC.
    
    IF WS-RESPONSE NOT EQUAL DFHRESP(NORMAL)
        EXEC CICS WRITE OPERATOR
            TEXT('SEND MAP command failed')
        END-EXEC
        EXEC CICS RETURN END-EXEC
    END-IF.
    
    * Send map operation completed successfully
    * Continue processing

Send Map Processing

1. Send Map Preparation

Send map preparation includes:

  • Send map validation - ensuring the send map operation is properly configured and authorized
  • Send map formatting - preparing data structures and buffers for send map data
  • Send map encoding - setting up proper character encoding and data transformation
  • Send map processing - initializing the send map operation and preparing for sending

2. Send Map Transmission

Send map transmission includes:

  • Send map routing - directing send map data to the appropriate processing location
  • Send map delivery - ensuring send map data reaches the correct destination within the application
  • Transmission confirmation - verifying that send map was completed successfully
  • Error handling - managing transmission failures and implementing retry mechanisms

3. Output Management

Output management includes:

  • User management - handling user sessions and maintaining connection state
  • Output formatting - structuring send map data for presentation or further processing
  • User experience - ensuring smooth data flow and responsive application behavior
  • Performance optimization - maximizing send map efficiency and minimizing resource usage

Common Response Codes

Success Response Codes

  • NORMAL (0): Send map operation completed successfully - sending was completed without errors
  • SEND (4): Send map operation completed - operation completed with send map-specific status

Error Response Codes

  • INVREQ (16): Invalid request - the send map operation parameters are incorrect or unauthorized
  • NOTFND (20): Resource not found - the specified send map resource does not exist
  • LENGERR (22): Length error - the send map data length exceeds expected limits
  • SEND (24): Send map error - a send map-specific error occurred during the operation

Best Practices

1. Send Map Preparation

  • Prepare send map appropriately - ensure all necessary resources and configurations are in place
  • Validate send map content - verify that send map data meets expected format and quality standards
  • Handle different send map types - implement flexible processing to accommodate various sending formats
  • Ensure send map integrity - maintain data consistency and prevent corruption during sending

2. Error Handling

  • Check all response codes - always examine both RESP and RESP2 for complete error information
  • Handle send map failures - implement appropriate recovery mechanisms for failed send map operations
  • Implement retry logic - provide automatic retry capabilities for transient failures
  • Log error conditions - maintain detailed logs for troubleshooting and monitoring purposes

3. Performance Optimization

  • Minimize send map operations - reduce unnecessary send map calls to improve overall performance
  • Use efficient send map formats - choose appropriate data formats to minimize processing overhead
  • Optimize user updates - streamline user interface updates to reduce response time
  • Manage user resources - efficiently allocate and manage system resources for send map operations

Explain It Like I'm 5 Years Old

Imagine you're sending a map:

When you want to send a map, you write it down and send it. If you send it, it goes to the person. If you don't send it, it stays with you.

CICS SEND MAP is like sending a map. The computer program writes data and sends it. If it sends it, it goes to the right place. If it doesn't send it, it stays with the program.

Just like you send maps, the computer program sends map data!

Exercises

Exercise 1: Send Map Operation

Write a CICS SEND MAP command to perform a send map operation.

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EXEC CICS SEND MAP
    RESP(WS-RESPONSE)
    RESP2(WS-RESPONSE2)
END-EXEC.

Exercise 2: Send Map Processing

How would you implement comprehensive send map processing that handles different send map types and requirements?

Answer: Identify different send map types and appropriate handling, implement send map validation and encoding, handle different send map types and capabilities, implement proper error handling for send map failures, optimize send map operations for performance, and maintain send map integrity throughout the process.

Quiz

Question 1

What is the primary purpose of CICS SEND MAP?

Answer: B) To provide send map management capabilities

Question 2

Which parameter specifies the response code?

Answer: A) RESP

Related Concepts

CICS Send Map Processing

Send map processing and output in CICS

CICS User Management

User management and user interaction in CICS

CICS Output Processing

Output processing and send map display in CICS