This content was translated with the machine translation.

To provide customers with more scalable capabilities and strengthen our service infrastructure, LegalOn will migrate the electronic signature platform used by the Sign module from DocuSign to Adobe Acrobat Sign.

As certain specifications will change as a result of this migration, we kindly ask that you review the information below and complete any necessary advance configuration.

Please review the migration overview, schedule, and required actions below and make the necessary preparations.

September 28, 2026 Update Details

Restrictions on email subject lines and messages were applied to signature requests created using DocuSign.

September 24, 2026 Update Details

Starting September 28, 2026 (planned), the following restrictions on email subject lines and messages will also apply to signature requests created using DocuSign. As previously announced, the migration to Adobe Acrobat Sign is scheduled for October 1, 2026.
- One email subject line will be used for the entire signature request.
- Messages can be set for each signer.
- Individual messages can no longer be set for CC recipients.

September 14, 2026 Update Details

The following specification change and correction have been added.
- Previously, CSV files could be attached to signature requests as reference files. After the migration of the electronic signature platform, CSV files will no longer be accepted as attachments.
- In our September 11, 2026 update, we stated that at least one signature field would continue to be required for each agreement to be signed following the migration of the electronic signature platform. This information was incorrect. After the migration, signature field placement will be optional, and signature requests can be sent without adding any signature fields. We sincerely apologize for the error.

September 11, 2026 Update Details (Corrected September 14, 2026)

[Notice Before Correction] We have decided not to implement the previously announced specification change regarding signature field placement requirements. Following the migration of the electronic signature platform, you will continue to be required to place at least one signature field in each agreement to be signed, as before. However, you will not be required to place at least one signature field for each signer.

*The above information was incorrect. After the migration of the electronic signature platform, signature field placement will be optional, and signature requests can be sent without adding any signature fields. This information was corrected on September 14, 2026.

September 1, 2026 Update Details

Temporarily changed the expiration period for newly sent DocuSign documents from 60 days to 30 days.
Published signing procedures for recipients.
- [For Recipients] Signing a Signature Request (Effective October 1, 2026)

1. Effective Date

Thursday, October 1, 2026

2. Planned Migration Schedule

September 1, 2026: The validity period for documents newly sent through DocuSign will be temporarily changed to 30 days (*1).
September 28, 2026: Restrictions on email subject lines and messages take effect for signature requests created using DocuSign.
September 30, 2026, 11:59 p.m.: Acceptance of new signature requests through DocuSign ends.
October 1, 2026, 12:00 a.m.: Operations begin on Adobe Acrobat Sign (cutover to the new platform).
October 30, 2026: Execution deadline for documents previously sent through DocuSign.

(*1) To accommodate operational adjustments associated with the expiration of our DocuSign agreement at the end of October, requests sent between September 1 and September 30 will temporarily have a validity period of 30 days. Requests sent through the new platform (Adobe Acrobat Sign) on or after October 1 are expected to return to the previous 60-day validity period. We apologize for any inconvenience and appreciate your understanding.

※ The schedule above is current as of the date of this notice and is subject to change. If the schedule changes, we will update this page and promptly notify you through a banner on the LegalOn product home screen.

3. What Will Not Change (Continuing Specifications and Legal Effect)

The following will remain unchanged after the platform migration:

Legal effect of electronic signatures: Following the migration, electronic signatures will retain legal effect equivalent to that provided through DocuSign (equivalent e-signature validity).
Previously executed agreements: Agreements and certificates completed through DocuSign will remain available for viewing and download in LegalOn after the migration.
Core operations and integrations: You can continue to create signature requests, track progress, manage executed documents, and submit approval requests in LegalOn as before.
Direct agreement with Adobe: Customers do not need to enter into a direct agreement with Adobe.
Additional fees: This migration will not result in any additional charges.

4. Key Changes and Important Notes

Some screen displays and specifications will change as part of the platform cutover. We apologize for any inconvenience and ask that you review the changes in advance.

*The screens shown are development images and may differ from the final user interface.

*The changes to email subject lines and messages shown in the comparison table below have applied to signature requests created using DocuSign since September 28, 2026, before the migration to Adobe Acrobat Sign. Unless otherwise noted, the other changes are scheduled to take effect after the platform migration on October 1, 2026.

Signature Request Creation Screen

Before | DocuSign

After | Adobe Acrobat Sign

CSV files can be attached to signature requests as reference files.
At least one signature field must be placed in each agreement to be signed.
Until September 27, 2026: Email subject lines and messages could be set for each recipient.
An email address may contain up to 100 characters in total.

CSV files cannot be attached to signature requests as reference files.
Signature field placement is optional. Signature requests can be sent without adding any signature fields.
The email subject is fixed for the entire request. A message can be configured for each signer, but not for CC recipients.
The portion of an email address before the @ symbol may contain up to 64 characters, and the full address may contain up to 100 characters.
The label “Viewer” will change to “CC Recipient.”

Important Notes About Existing Signature Request Templates

Existing templates will be carried over after the migration. You do not need to recreate them.

However, the following settings were automatically removed from existing templates on September 28, 2026:

Subject lines set for individual recipients (one subject line will be used for the entire signature request).
Individual messages set for CC recipients (messages will no longer be sent to CC recipients).

Signature Request Email

Before \| DocuSign	After \| Adobe Acrobat Sign
Emails are sent using DocuSign's design and wording.	Emails are sent using a design and wording based on Adobe Acrobat Sign.

Signing Screen

Signing Actions

Before \| DocuSign	After \| Adobe Acrobat Sign
Enter information and sign on the DocuSign signing screen. “Save and send later” is available.	Enter information and sign on the Adobe Acrobat Sign signing screen. “Save and send later” is not available.

Other Actions

Before \| DocuSign	After \| Adobe Acrobat Sign
You can choose to download either a combined PDF or individual PDF files. View the completion certificate by selecting “...” > “View Certificate (PDF).” View history and session information from the “...” menu.	Only individual PDF files can be downloaded using “Download PDF” (a combined PDF cannot be downloaded). View history and session information under “Activity.” An “Audit Report” (completion certificate) is attached to the signature completion email. () () You must sign in to Adobe Acrobat to download the report using “Download Audit Report” on the signing screen.

Importing Files into LegalOn After Execution

Before \| DocuSign	After \| Adobe Acrobat Sign
The imported completion certificate is named “Sign Completion Certificate.pdf.”	The imported completion certificate is named “Audit Trail.pdf.”

Important Notes on Electronic Execution with Companies in China

On the new platform (Adobe Acrobat Sign), communications originating from within China are generally restricted (blocked) as part of compliance measures addressing China's Personal Information Protection Law (PIPL), increasingly stringent cross-border data transfer regulations, and enhanced regulatory oversight.

Accordingly, counterparties located in China (that is, users accessing from an IP address in China) generally will no longer be able to execute agreements electronically using LegalOn Sign.

Note: A counterparty may be able to sign if it uses a VPN or a similar connection to access the service through a network outside China.

We apologize for the inconvenience and ask customers with applicable transactions to take note of this limitation in advance.

5. Preparations Required from Administrators by Wednesday, September 30, 2026

If your organization has internal network controls or email receipt restrictions in place, please complete the following configuration changes and registrations by Wednesday, September 30, 2026.

Please forward or share the information in the box below with your internal network administrator or IT department and ask them to review it.

※ Please also share item 2 in the box below with the relevant contacts at your business partners.

[Required Actions]

1. Add Network Access Permissions (Allowlist) (Applicable Customers Only)

Please confirm whether your organization's network settings control connections by destination domain, such as through an Allow list or a Deny list with permitted exceptions.

If such restrictions are in place, please add the following 11 domains to your allowlist:

*.adobesign.com
*.adobesigncdn.com
*.echocdn.com
*.echosign.com
acrs.adobe.com
fonts.googleapis.com
fonts.gstatic.com
p.typekit.net
p13n.adobe.io
use.typekit.net
www.adobe.com

2. Add Email Receipt Permissions (Allowlist) (Applicable Customers Only)

To ensure that signature request emails are received properly, if your email server, spam filter, or other system uses domain-based receipt permissions (allowlisting), please register the following:

Email address to allow: adobesign@adobesign.com
Domain to allow: @adobesign.com (or adobesign.com)

※ Register the email address or domain above in accordance with your organization's security configuration requirements.

If you do not use network or email receipt restrictions like those described above, no special procedures or configuration changes are required on your side.

If you have any questions about this matter, please contact us through in-product chat support or at legaloncloud_support@legalontech.jp.

We remain committed to providing an even better service and sincerely appreciate your understanding and cooperation.

※Adobe product screenshot(s) reprinted with permission from Adobe.

※Adobe, Acrobat, and Adobe Acrobat Sign are trademarks or registered trademarks of Adobe Inc. in the United States and other countries.