Error Encountered: Cannot Read Properties of Undefined (Reading 'map') When Running the Deploy and FixedKey Commands

[haolt-toratech]

Hello MC Dev Team,

I’m new to both your tool and Salesforce Marketing Cloud, and I would greatly appreciate your help with the issue I’m encountering.

Goal

My goal is to deploy changes to an SQL query file and the content of an automation verification step to Marketing Cloud by running the deploy command, as well as the fixedKeys command for queries and DataExtensions as the files are named using external keys. However, I have been unable to successfully execute these commands. Below is an image of the error I encountered:

Note: A similar error was displayed during different command processes.

Issue

The problem seems to be related to DataExtensions and specifically subtypes such as:

• shared_data
• shared_dataextension
• shared_salesforcedataextension
• synchronizeddataextension

Whenever I run commands that involve processing or caching these subtypes (e.g., mcdev deploy or mcdev fixedKeys), the process fails. This issue occurs for resources such as:

• Automation verification steps
• SQL query files
• DataExtensions themselves

Could you please advise on how to resolve this issue? Specifically:

1. How can I skip or bypass the caching process for these subtypes during commands like deploy or fixedKeys?
2. Are there additional configurations or adjustments I need to make in my config.json or elsewhere to avoid this error?

Details

1. Initialy, I was able to retrieve all resources, except dataExtension and query, from my Marketing Cloud instance to local folder using the command:

mcdev retrieve [BU]

I've noticed encountered this error in the log:

error: - Retrieving dataExtension failed: Cannot read properties of undefined (reading 'map')

Interestingly, if I run the command specifically for DataExtensions or query, it retrieves those resource successfully without errors, even the caching step is went through, no error log was displayed:

mcdev retrieve [BU] dataExtension

2. Running the deploy or fixedKey command failed during the caching subtypes step:

deploy command:

mcdev deploy [BU] query "key_name" --fromRetrieve --debug

fixKey command:

mcdev fixKeys [BU] query

Same error was displayed: error: mcdev.deploy failed: Cannot read properties of undefined (reading 'map')

20:10:08 error: mcdev.deploy failed: Cannot read properties of undefined (reading 'map')
20:10:08 debug: TypeError: Cannot read properties of undefined (reading 'map')
at Folder.retrieve (file:///opt/homebrew/lib/node_modules/mcdev/lib/metadataTypes/Folder.js:58:52)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
at async DataExtension.retrieveSharedForCache (file:///opt/homebrew/lib/node_modules/mcdev/lib/metadataTypes/DataExtension.js:830:24)
at async DataExtension.retrieve (file:///opt/homebrew/lib/node_modules/mcdev/lib/metadataTypes/DataExtension.js:776:38)
at async Deployer._deploy (file:///opt/homebrew/lib/node_modules/mcdev/lib/Deployer.js:347:28)
at async Deployer._deployBU (file:///opt/homebrew/lib/node_modules/mcdev/lib/Deployer.js:248:40)
at async Deployer.deploy (file:///opt/homebrew/lib/node_modules/mcdev/lib/Deployer.js:204:46)
at async Mcdev.deploy (file:///opt/homebrew/lib/node_modules/mcdev/lib/index.js:507:30)

[JoernBerkefeld]

lets track that under the bug ticket because even if this is instance / BU specific and doesn't happen for others, the solution should be made more reliable to handle it gracefully.

• [BUG] <Deployment fail at step caching Subtypes with error Cannot read properties of undefined (reading 'map')> #1932