Many Tally users face Error Code 6712 – Internal Error while trying to enable or apply Default TDL Configuration in the Tally Control Center. This error generally appears under Account Management → License Management → Deployment Information, even when the license, TSS, and subscription status are active.

This article explains why Error 6712 occurs, what does not work, and the exact step-by-step solution that finally resolved the issue — confirmed after coordination with official Tally WhatsApp Support.

Error Message Observed

Error Code 6712 – Internal error. Please contact Tally Solutions.

This error appears when:

• Clicking Edit under Deployment Information

• Selecting Default TDL Config

• Clicking Save

System & License Status (Before Fix)

✔ TSS Subscription: Active
✔ License Status: Active 
✔ General Configuration: Saves successfully
❌ Default TDL Configuration: Fails with Error 6712

Initial Symptoms & Observations

• Only two configuration options were visible

• General Configuration saved without error

• Default TDL Configuration failed every time

• Error occurred even before applying any custom TDL

• Error was reproducible on multiple systems

Root Cause of Tally Error 6712

The issue was not caused by:

• License expiry

• TSS issue

• Corrupt Tally installation

• Add-on failure

✅ Actual Cause
The Default TDL Configuration was not properly created and mapped in TDL Management inside the Tally Control Center. Tally requires explicitly created TDL configurations to be assigned to each deployment/system.

Confirmed Working Solution (Step-by-Step)

Step 1: Login to Tally Control Center

• Visit Tally Solutions Website

• Login using your licensed email

• Go to Control Center

Step 2: Create New TDL Configurations

Navigate to:
TDL Management → TDL Configuration

Create First Configuration

• Click Create

• Name: Tally 1

• Allow Local TDL: No

• Select required Add-ons

• Save

Create Second Configuration (If required)

• Click Create

• Name: Tally 2

• Allow Local TDL: No

• Select same Add-ons

• Save

✔ Both configurations must save successfully

Step 3: Assign Configurations in License Management

Go to:
Account Management → License Management

• Click Edit under Deployment Information

• For First System, select Tally 1

• For Second System, select Tally 2

• Save

✔ No error should appear now

Step 4: Update License in Tally Software

On each system:

1. Open Tally

2. Go to F1 → Help

3. Click Update License

Final Result

? Issue Resolved Successfully

• Error Code 6712 completely removed

• Default TDL Configuration applied correctly

• TDL working on both systems

• No further internal errors

• Confirmed stable operation

Important Notes

• Never rely only on Default TDL Config if not explicitly created

• Each system should have its own TDL Configuration

• Always update license after Control Center changes

• This solution works for Single User & Multi-User licenses

Who Will Benefit From This Article

✔ Tally Prime users
✔ Tally Silver / Gold license holders
✔ Users facing Internal Error 6712
✔ IT administrators managing multiple Tally systems
✔ Businesses using TDL add-ons

Conclusion

Tally Error Code 6712 is not a license or software bug — it is a configuration mapping issue. Creating and assigning proper TDL configurations resolves the problem permanently.

This solution was implemented live with Tally official WhatsApp Support and verified as 100% working.

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