**1. Introduction**

Government affairs include all matters that concern the whole life of society. In the life of the state in Indonesia, the affairs of regional government are all of these matters, except for those declared to be the affairs of the (central) government. This is as stated in Law Number 23 of 2014 (UU 23/2014) concerning the Regional Government [1]. One of the governmental affairs that must be carried out by the regions is the matter of spatial planning. In Law 23/2014, spatial planning affairs are concurrent affairs that must be carried out and related to basic services, including concurrent affairs, because spatial planning affairs are carried out by both the central and regional governments. One of the aspects of the implementation of spatial planning affairs is spatial planning activities. This activity is carried out to produce general plans and detailed spatial plans, one of which is the Detailed Spatial Plan (RDTR). This RDTR is required as a basis for granting permits related to investment.

Based on Government Regulation (PP) Number 24 of 2018 concerning Electronically Integrated Business Licensing Services [2], or what is commonly referred to as Online Single Submission (OSS), investment licensing in Indonesia will go through one door. The issuance of this PP was motivated by complaints from many investors over conditions that were not conducive in obtaining business licenses in Indonesia. To cut down on the number of tables that are passed through in this licensing process, the Government issued this PP, which it is hoped that investors can immediately start their business quickly when all the requirements have been completed and increase certainty in obtaining permits.

To realize these expectations, the system being developed requires important input, namely spatial planning, which is the basis for issuing permits that enable investors to carry out development or construction at their place of business. This is because investors certainly need a Location Permit and Building Permit (IMB) to operate their business, even though the principal permit has been obtained from the central government. The spatial plan required as the basis for issuing the Location Permit and IMB is the RDTR and Zoning Regulations (PZ). In this regard, since the enactment of the OSS, the government has tried to accelerate the preparation of the RDTR until it becomes a Regional Head Regulation which is expected to become the basis for the OSS in issuing location permits and IMBs.

This study aims to look at various innovations, problems, and challenges faced in the preparation of an accelerated RDTR as OSS input in increasing this investment. The results of this study can be used as input for policy evaluation and improvements in policies and subsequent strategic and technical steps. The case chosen is the location for the preparation of the RDTR where the author was involved in its preparation, namely the preparation of the Sendawar Timur RDTR, West Kutai Regency, East Kalimantan Province.
