WASHINGTON, Jan 13 (Reuters) - Wall Street firms

including Blackstone, Apollo Capital Management and

Carlyle have agreed to pay more than $63 million for

violating U.S. Securities and Exchange Commission rules over

record-keeping, the regulator said on Monday.

The investment advisers and broker-dealers also admitted

they violated rules in connection with employees' use of

off-channel communications platforms such as WhatsApp, the SEC

said in a statement.

The funds are the latest of dozens of Wall Street firms that

have paid stiff penalties over the last few years to settle

related charges. The SEC's investigative sweep, launched in

2021, has been a major initiative under outgoing SEC chair Gary

Gensler that has ensnared big banks and others.

As part of the settlements announced on Monday, the firms

acknowledged their conduct violated record-keeping provisions,

and have begun implementing improvements to their compliance

policies and procedures, the SEC said.

The firms are:

* Blackstone Alternative Credit Advisors LP

* Blackstone Management Partners LLC

* Blackstone Real Estate Advisors LP

* Kohlberg Kravis Roberts & Co. LP

* Charles Schwab ( SCHW ) & Co

* Apollo Capital Management LP

* Carlyle Investment Management LLC

* Carlyle Global Credit Investment Management LLC

* AlpInvest Partners B.V.

* TPG Capital Advisors LLC

* Santander US Capital Markets LLC

* PJT Partners LP